diff --git a/acl_create_request_test.go b/acl_create_request_test.go
index fdaf0edd5..9beca5776 100644
--- a/acl_create_request_test.go
+++ b/acl_create_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/acl_create_response_test.go b/acl_create_response_test.go
index 65b934d9a..de177266b 100644
--- a/acl_create_response_test.go
+++ b/acl_create_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/acl_delete_request_test.go b/acl_delete_request_test.go
index cb126e30f..d8c1612cf 100644
--- a/acl_delete_request_test.go
+++ b/acl_delete_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/acl_delete_response_test.go b/acl_delete_response_test.go
index eb57d68a5..a73fd9edf 100644
--- a/acl_delete_response_test.go
+++ b/acl_delete_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/acl_describe_request_test.go b/acl_describe_request_test.go
index 3cb73eb79..967ab0b19 100644
--- a/acl_describe_request_test.go
+++ b/acl_describe_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/acl_describe_response_test.go b/acl_describe_response_test.go
index f0652cfee..ccdee4f95 100644
--- a/acl_describe_response_test.go
+++ b/acl_describe_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/acl_types_test.go b/acl_types_test.go
index 0b5247a14..03ada8780 100644
--- a/acl_types_test.go
+++ b/acl_types_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/add_offsets_to_txn_request_test.go b/add_offsets_to_txn_request_test.go
index 471d085cd..31801f8bd 100644
--- a/add_offsets_to_txn_request_test.go
+++ b/add_offsets_to_txn_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/add_offsets_to_txn_response_test.go b/add_offsets_to_txn_response_test.go
index d1730cee4..b390e6d94 100644
--- a/add_offsets_to_txn_response_test.go
+++ b/add_offsets_to_txn_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/add_partitions_to_txn_request_test.go b/add_partitions_to_txn_request_test.go
index f60a88695..9b3ea8580 100644
--- a/add_partitions_to_txn_request_test.go
+++ b/add_partitions_to_txn_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/add_partitions_to_txn_response_test.go b/add_partitions_to_txn_response_test.go
index b3635e58d..0def526cb 100644
--- a/add_partitions_to_txn_response_test.go
+++ b/add_partitions_to_txn_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/admin_test.go b/admin_test.go
index 5b42a5a6a..4aa279763 100644
--- a/admin_test.go
+++ b/admin_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/alter_client_quotas_request_test.go b/alter_client_quotas_request_test.go
index 46f92b9cb..1e03e0fb6 100644
--- a/alter_client_quotas_request_test.go
+++ b/alter_client_quotas_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/alter_client_quotas_response_test.go b/alter_client_quotas_response_test.go
index 40efeb547..0778466a3 100644
--- a/alter_client_quotas_response_test.go
+++ b/alter_client_quotas_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/alter_configs_request_test.go b/alter_configs_request_test.go
index e612244c6..181d0c8e7 100644
--- a/alter_configs_request_test.go
+++ b/alter_configs_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/alter_configs_response_test.go b/alter_configs_response_test.go
index 62cd5991f..e1230e263 100644
--- a/alter_configs_response_test.go
+++ b/alter_configs_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/alter_partition_reassignments_request_test.go b/alter_partition_reassignments_request_test.go
index c917f2d79..bd56aac3d 100644
--- a/alter_partition_reassignments_request_test.go
+++ b/alter_partition_reassignments_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/alter_partition_reassignments_response_test.go b/alter_partition_reassignments_response_test.go
index 8c39ef6ce..f4a56dcb1 100644
--- a/alter_partition_reassignments_response_test.go
+++ b/alter_partition_reassignments_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/alter_user_scram_credentials_request_test.go b/alter_user_scram_credentials_request_test.go
index 6fe881906..8ca5311f7 100644
--- a/alter_user_scram_credentials_request_test.go
+++ b/alter_user_scram_credentials_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/alter_user_scram_credentials_response_test.go b/alter_user_scram_credentials_response_test.go
index 983500639..1fced382a 100644
--- a/alter_user_scram_credentials_response_test.go
+++ b/alter_user_scram_credentials_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/api_versions_request_test.go b/api_versions_request_test.go
index 371ac9602..fe21ec524 100644
--- a/api_versions_request_test.go
+++ b/api_versions_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/api_versions_response_test.go b/api_versions_response_test.go
index 26e0bf2a4..585b83fa0 100644
--- a/api_versions_response_test.go
+++ b/api_versions_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/async_producer_test.go b/async_producer_test.go
index 099441d70..d6c41e9c3 100644
--- a/async_producer_test.go
+++ b/async_producer_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/balance_strategy_test.go b/balance_strategy_test.go
index f397a9073..f0d301f3a 100644
--- a/balance_strategy_test.go
+++ b/balance_strategy_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/broker_test.go b/broker_test.go
index 6e6b8480c..1b9f2099a 100644
--- a/broker_test.go
+++ b/broker_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/client_test.go b/client_test.go
index 155827a00..59a510062 100644
--- a/client_test.go
+++ b/client_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/client_tls_test.go b/client_tls_test.go
index 7c2432c99..c3f31e01a 100644
--- a/client_tls_test.go
+++ b/client_tls_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/config_test.go b/config_test.go
index 4db9af95c..2854d7e76 100644
--- a/config_test.go
+++ b/config_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/consumer_group_example_test.go b/consumer_group_example_test.go
index 06eb1d964..c61901e6d 100644
--- a/consumer_group_example_test.go
+++ b/consumer_group_example_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/consumer_group_members_test.go b/consumer_group_members_test.go
index a28755d2e..98c63c4d2 100644
--- a/consumer_group_members_test.go
+++ b/consumer_group_members_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/consumer_group_test.go b/consumer_group_test.go
index 30d615e98..2e62f2792 100644
--- a/consumer_group_test.go
+++ b/consumer_group_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/consumer_metadata_request_test.go b/consumer_metadata_request_test.go
index 3f6bcdb57..c770e02b8 100644
--- a/consumer_metadata_request_test.go
+++ b/consumer_metadata_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/consumer_metadata_response_test.go b/consumer_metadata_response_test.go
index cdd489ec1..18dcdfc34 100644
--- a/consumer_metadata_response_test.go
+++ b/consumer_metadata_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/consumer_test.go b/consumer_test.go
index 126cef6c3..e1e21b6e9 100644
--- a/consumer_test.go
+++ b/consumer_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/control_record_test.go b/control_record_test.go
index 8a1d74863..168a8e7e6 100644
--- a/control_record_test.go
+++ b/control_record_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/create_partitions_request_test.go b/create_partitions_request_test.go
index 8230b3866..07f66eb26 100644
--- a/create_partitions_request_test.go
+++ b/create_partitions_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/create_partitions_response_test.go b/create_partitions_response_test.go
index 83125a20e..880dda20a 100644
--- a/create_partitions_response_test.go
+++ b/create_partitions_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/create_topics_request_test.go b/create_topics_request_test.go
index daf223c53..daa04bf67 100644
--- a/create_topics_request_test.go
+++ b/create_topics_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/create_topics_response_test.go b/create_topics_response_test.go
index 8e92db331..d7db851c9 100644
--- a/create_topics_response_test.go
+++ b/create_topics_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/delete_groups_request_test.go b/delete_groups_request_test.go
index 908172498..0851ef72f 100644
--- a/delete_groups_request_test.go
+++ b/delete_groups_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/delete_groups_response_test.go b/delete_groups_response_test.go
index 0bcfe5528..c28d56892 100644
--- a/delete_groups_response_test.go
+++ b/delete_groups_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/delete_offsets_request_test.go b/delete_offsets_request_test.go
index 0eea3fc9f..dc0368dbe 100644
--- a/delete_offsets_request_test.go
+++ b/delete_offsets_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/delete_offsets_response_test.go b/delete_offsets_response_test.go
index 8d069dbcb..ca0d325fe 100644
--- a/delete_offsets_response_test.go
+++ b/delete_offsets_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/delete_records_request_test.go b/delete_records_request_test.go
index c72960cfb..5531a94d3 100644
--- a/delete_records_request_test.go
+++ b/delete_records_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/delete_records_response_test.go b/delete_records_response_test.go
index 3653cdc41..853f46772 100644
--- a/delete_records_response_test.go
+++ b/delete_records_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/delete_topics_request_test.go b/delete_topics_request_test.go
index c313a2f3b..322660405 100644
--- a/delete_topics_request_test.go
+++ b/delete_topics_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/delete_topics_response_test.go b/delete_topics_response_test.go
index 516f1a3bd..754976826 100644
--- a/delete_topics_response_test.go
+++ b/delete_topics_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/describe_client_quotas_request_test.go b/describe_client_quotas_request_test.go
index 6b8c0c9c5..07589e918 100644
--- a/describe_client_quotas_request_test.go
+++ b/describe_client_quotas_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/describe_client_quotas_response_test.go b/describe_client_quotas_response_test.go
index 6c681d11c..3fde4a302 100644
--- a/describe_client_quotas_response_test.go
+++ b/describe_client_quotas_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/describe_configs_request_test.go b/describe_configs_request_test.go
index b3a8d295a..87ddf6e90 100644
--- a/describe_configs_request_test.go
+++ b/describe_configs_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/describe_configs_response_test.go b/describe_configs_response_test.go
index ea8f28e57..e84b06c91 100644
--- a/describe_configs_response_test.go
+++ b/describe_configs_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/describe_groups_request_test.go b/describe_groups_request_test.go
index a2d87b4b6..26be03115 100644
--- a/describe_groups_request_test.go
+++ b/describe_groups_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/describe_groups_response_test.go b/describe_groups_response_test.go
index 8930a2eb6..3598a5c8c 100644
--- a/describe_groups_response_test.go
+++ b/describe_groups_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/describe_log_dirs_request_test.go b/describe_log_dirs_request_test.go
index 65b88c685..e2d7e1ff2 100644
--- a/describe_log_dirs_request_test.go
+++ b/describe_log_dirs_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/describe_log_dirs_response_test.go b/describe_log_dirs_response_test.go
index 5a1eb5b5e..eb0aabc5c 100644
--- a/describe_log_dirs_response_test.go
+++ b/describe_log_dirs_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/describe_user_scram_credentials_request_test.go b/describe_user_scram_credentials_request_test.go
index 87e52bab6..d4859fe86 100644
--- a/describe_user_scram_credentials_request_test.go
+++ b/describe_user_scram_credentials_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/describe_user_scram_credentials_response_test.go b/describe_user_scram_credentials_response_test.go
index a251eaf7a..36c2a7284 100644
--- a/describe_user_scram_credentials_response_test.go
+++ b/describe_user_scram_credentials_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/elect_leaders_request_test.go b/elect_leaders_request_test.go
index 0133c0cad..1e307d4a4 100644
--- a/elect_leaders_request_test.go
+++ b/elect_leaders_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/elect_leaders_response_test.go b/elect_leaders_response_test.go
index 8768dfbb8..edbe7c07c 100644
--- a/elect_leaders_response_test.go
+++ b/elect_leaders_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/encoder_decoder_fuzz_test.go b/encoder_decoder_fuzz_test.go
index 968fb1a29..42aad3b9c 100644
--- a/encoder_decoder_fuzz_test.go
+++ b/encoder_decoder_fuzz_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 //go:build go1.18
 
 package sarama
diff --git a/end_txn_request_test.go b/end_txn_request_test.go
index 6f5d4480e..3feaa2b39 100644
--- a/end_txn_request_test.go
+++ b/end_txn_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/end_txn_response_test.go b/end_txn_response_test.go
index d7ae1c988..63524033b 100644
--- a/end_txn_response_test.go
+++ b/end_txn_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/errors_test.go b/errors_test.go
index 4efdd9d4e..b43b5b842 100644
--- a/errors_test.go
+++ b/errors_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/examples/http_server/http_server_test.go b/examples/http_server/http_server_test.go
index 83d445196..d6eaa2f51 100644
--- a/examples/http_server/http_server_test.go
+++ b/examples/http_server/http_server_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package main
 
 import (
diff --git a/fetch_request_test.go b/fetch_request_test.go
index 3df2df125..6b9e5a0c6 100644
--- a/fetch_request_test.go
+++ b/fetch_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/fetch_response_test.go b/fetch_response_test.go
index ab8959a9a..e78f7e6f7 100644
--- a/fetch_response_test.go
+++ b/fetch_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/find_coordinator_request_test.go b/find_coordinator_request_test.go
index 7e889b074..c653cdc75 100644
--- a/find_coordinator_request_test.go
+++ b/find_coordinator_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/find_coordinator_response_test.go b/find_coordinator_response_test.go
index 417a76c6e..a0072bf0a 100644
--- a/find_coordinator_response_test.go
+++ b/find_coordinator_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/functional_admin_test.go b/functional_admin_test.go
index 9962bce95..29472d4ae 100644
--- a/functional_admin_test.go
+++ b/functional_admin_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 //go:build functional
 
 package sarama
diff --git a/functional_client_test.go b/functional_client_test.go
index 5120d4204..83016d4ed 100644
--- a/functional_client_test.go
+++ b/functional_client_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 //go:build functional
 
 package sarama
diff --git a/functional_consumer_follower_fetch_test.go b/functional_consumer_follower_fetch_test.go
index daac03aed..f0638beb7 100644
--- a/functional_consumer_follower_fetch_test.go
+++ b/functional_consumer_follower_fetch_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 //go:build functional
 
 package sarama
diff --git a/functional_consumer_group_test.go b/functional_consumer_group_test.go
index 64ce5cf9a..632ce474a 100644
--- a/functional_consumer_group_test.go
+++ b/functional_consumer_group_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 //go:build functional
 
 package sarama
diff --git a/functional_consumer_staticmembership_test.go b/functional_consumer_staticmembership_test.go
index 2cab56cc3..ab27c0640 100644
--- a/functional_consumer_staticmembership_test.go
+++ b/functional_consumer_staticmembership_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 //go:build functional
 
 package sarama
diff --git a/functional_consumer_test.go b/functional_consumer_test.go
index 53dd11879..194549b45 100644
--- a/functional_consumer_test.go
+++ b/functional_consumer_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 //go:build functional
 
 package sarama
diff --git a/functional_offset_manager_test.go b/functional_offset_manager_test.go
index 76b6d7818..0ca666bdb 100644
--- a/functional_offset_manager_test.go
+++ b/functional_offset_manager_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 //go:build functional
 
 package sarama
diff --git a/functional_producer_test.go b/functional_producer_test.go
index 1a89ac603..b3a327275 100644
--- a/functional_producer_test.go
+++ b/functional_producer_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 //go:build functional
 
 package sarama
diff --git a/functional_test.go b/functional_test.go
index 291c8ac9a..5782fdd08 100644
--- a/functional_test.go
+++ b/functional_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 //go:build functional
 
 package sarama
diff --git a/heartbeat_request_test.go b/heartbeat_request_test.go
index fd62685b0..70a3c6df3 100644
--- a/heartbeat_request_test.go
+++ b/heartbeat_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/heartbeat_response_test.go b/heartbeat_response_test.go
index c5d669e8f..d37b6bc63 100644
--- a/heartbeat_response_test.go
+++ b/heartbeat_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/incremental_alter_configs_request_test.go b/incremental_alter_configs_request_test.go
index d239bf5f5..9b3f1bf3e 100644
--- a/incremental_alter_configs_request_test.go
+++ b/incremental_alter_configs_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/incremental_alter_configs_response_test.go b/incremental_alter_configs_response_test.go
index 697156709..84ce361aa 100644
--- a/incremental_alter_configs_response_test.go
+++ b/incremental_alter_configs_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/init_producer_id_request_test.go b/init_producer_id_request_test.go
index 4214342e1..604b9a558 100644
--- a/init_producer_id_request_test.go
+++ b/init_producer_id_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/init_producer_id_response_test.go b/init_producer_id_response_test.go
index ebc5d16ad..aaf7ab371 100644
--- a/init_producer_id_response_test.go
+++ b/init_producer_id_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/join_group_request_test.go b/join_group_request_test.go
index 2597b8669..938ba485b 100644
--- a/join_group_request_test.go
+++ b/join_group_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/join_group_response_test.go b/join_group_response_test.go
index 9c9800b9a..bc66252a2 100644
--- a/join_group_response_test.go
+++ b/join_group_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/kerberos_client_test.go b/kerberos_client_test.go
index 6b14a6e44..36b8fe93f 100644
--- a/kerberos_client_test.go
+++ b/kerberos_client_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/leave_group_request_test.go b/leave_group_request_test.go
index 4b8d482f7..37eec6326 100644
--- a/leave_group_request_test.go
+++ b/leave_group_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/leave_group_response_test.go b/leave_group_response_test.go
index 306c721a0..b09590ac9 100644
--- a/leave_group_response_test.go
+++ b/leave_group_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/list_groups_request_test.go b/list_groups_request_test.go
index fbb3bbd42..c4b63d4cf 100644
--- a/list_groups_request_test.go
+++ b/list_groups_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/list_groups_response_test.go b/list_groups_response_test.go
index a7205f854..7a78d61c7 100644
--- a/list_groups_response_test.go
+++ b/list_groups_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/list_partition_reassignments_request_test.go b/list_partition_reassignments_request_test.go
index e50b289b9..4df5fdb03 100644
--- a/list_partition_reassignments_request_test.go
+++ b/list_partition_reassignments_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/list_partition_reassignments_response_test.go b/list_partition_reassignments_response_test.go
index 71532423d..e3f2bf120 100644
--- a/list_partition_reassignments_response_test.go
+++ b/list_partition_reassignments_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/logger_test.go b/logger_test.go
index 1aa79c5ee..e079c8f3e 100644
--- a/logger_test.go
+++ b/logger_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/message_test.go b/message_test.go
index 02d29134b..788dc3402 100644
--- a/message_test.go
+++ b/message_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/metadata_request_test.go b/metadata_request_test.go
index f99993032..c90340d63 100644
--- a/metadata_request_test.go
+++ b/metadata_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/metadata_response_test.go b/metadata_response_test.go
index 63c1d4801..3af3b35a9 100644
--- a/metadata_response_test.go
+++ b/metadata_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/metrics_test.go b/metrics_test.go
index c9144df38..a41c8a78e 100644
--- a/metrics_test.go
+++ b/metrics_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/mocks/async_producer_test.go b/mocks/async_producer_test.go
index e282109e2..27b09ddcd 100644
--- a/mocks/async_producer_test.go
+++ b/mocks/async_producer_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package mocks
 
 import (
diff --git a/mocks/consumer_test.go b/mocks/consumer_test.go
index 1d8659a3d..9bc527cc2 100644
--- a/mocks/consumer_test.go
+++ b/mocks/consumer_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package mocks
 
 import (
diff --git a/mocks/sync_producer_test.go b/mocks/sync_producer_test.go
index f2e51cf5e..ece1cfad8 100644
--- a/mocks/sync_producer_test.go
+++ b/mocks/sync_producer_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package mocks
 
 import (
diff --git a/offset_commit_request_test.go b/offset_commit_request_test.go
index 2731aacdb..e617539d9 100644
--- a/offset_commit_request_test.go
+++ b/offset_commit_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/offset_commit_response_test.go b/offset_commit_response_test.go
index e0ad7c02c..c5b36a601 100644
--- a/offset_commit_response_test.go
+++ b/offset_commit_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/offset_fetch_request_test.go b/offset_fetch_request_test.go
index d4497a8b8..1c545ba0e 100644
--- a/offset_fetch_request_test.go
+++ b/offset_fetch_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/offset_fetch_response_test.go b/offset_fetch_response_test.go
index 0676b0fc4..a440da5d6 100644
--- a/offset_fetch_response_test.go
+++ b/offset_fetch_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/offset_manager_test.go b/offset_manager_test.go
index 971ed3a42..461da4f3e 100644
--- a/offset_manager_test.go
+++ b/offset_manager_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/offset_request_test.go b/offset_request_test.go
index 619680ea3..54aae1dea 100644
--- a/offset_request_test.go
+++ b/offset_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/offset_response_test.go b/offset_response_test.go
index e46fc121e..a16ce6841 100644
--- a/offset_response_test.go
+++ b/offset_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/partitioner_test.go b/partitioner_test.go
index 7d25db1d3..a69c5e1a8 100644
--- a/partitioner_test.go
+++ b/partitioner_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/produce_request_test.go b/produce_request_test.go
index e8684ffd2..1b5e41f19 100644
--- a/produce_request_test.go
+++ b/produce_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/produce_response_test.go b/produce_response_test.go
index 9018d5354..dd0b1d3f0 100644
--- a/produce_response_test.go
+++ b/produce_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/produce_set_test.go b/produce_set_test.go
index 8f580c27d..34da232e8 100644
--- a/produce_set_test.go
+++ b/produce_set_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/record_test.go b/record_test.go
index aec5c848d..b5bf5c89e 100644
--- a/record_test.go
+++ b/record_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/records_test.go b/records_test.go
index 621e4b32d..90f688b4a 100644
--- a/records_test.go
+++ b/records_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/request_test.go b/request_test.go
index 70b09a89a..1b438bf03 100644
--- a/request_test.go
+++ b/request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/response_header_test.go b/response_header_test.go
index c7c68eae7..8e7cd5b77 100644
--- a/response_header_test.go
+++ b/response_header_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/sarama_test.go b/sarama_test.go
index 3ec484bd3..c7c235390 100644
--- a/sarama_test.go
+++ b/sarama_test.go
@@ -1,4 +1,5 @@
 //go:build !functional
+//go:build !functional
 
 package sarama
 
diff --git a/sasl_authenticate_request_test.go b/sasl_authenticate_request_test.go
index fd13a7c4a..7abaff64c 100644
--- a/sasl_authenticate_request_test.go
+++ b/sasl_authenticate_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/sasl_authenticate_response_test.go b/sasl_authenticate_response_test.go
index ed037ed08..1fd96f04f 100644
--- a/sasl_authenticate_response_test.go
+++ b/sasl_authenticate_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/sasl_handshake_request_test.go b/sasl_handshake_request_test.go
index e100ad5b9..987965416 100644
--- a/sasl_handshake_request_test.go
+++ b/sasl_handshake_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/sasl_handshake_response_test.go b/sasl_handshake_response_test.go
index de289ca0d..0158c3cf6 100644
--- a/sasl_handshake_response_test.go
+++ b/sasl_handshake_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/scram_formatter_test.go b/scram_formatter_test.go
index b673a6a7d..d16efb35c 100644
--- a/scram_formatter_test.go
+++ b/scram_formatter_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/sticky_assignor_user_data_test.go b/sticky_assignor_user_data_test.go
index 9eb09a615..56edbe877 100644
--- a/sticky_assignor_user_data_test.go
+++ b/sticky_assignor_user_data_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/sync_group_request_test.go b/sync_group_request_test.go
index 2eb23b03b..35af6a9b9 100644
--- a/sync_group_request_test.go
+++ b/sync_group_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/sync_group_response_test.go b/sync_group_response_test.go
index 8943153f6..6cb2822b4 100644
--- a/sync_group_response_test.go
+++ b/sync_group_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/sync_producer_test.go b/sync_producer_test.go
index 776ae5f69..b10a572a2 100644
--- a/sync_producer_test.go
+++ b/sync_producer_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/transaction_manager_test.go b/transaction_manager_test.go
index 6a9b04ab0..6101cbb50 100644
--- a/transaction_manager_test.go
+++ b/transaction_manager_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/txn_offset_commit_request_test.go b/txn_offset_commit_request_test.go
index 5dea31767..7f9ea8004 100644
--- a/txn_offset_commit_request_test.go
+++ b/txn_offset_commit_request_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/txn_offset_commit_response_test.go b/txn_offset_commit_response_test.go
index b4caa69b9..a3cfe6d96 100644
--- a/txn_offset_commit_response_test.go
+++ b/txn_offset_commit_response_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (
diff --git a/utils_test.go b/utils_test.go
index dc487dd67..fd77e8640 100644
--- a/utils_test.go
+++ b/utils_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import "testing"
diff --git a/zstd_test.go b/zstd_test.go
index efdc6d83d..c4ae7dba0 100644
--- a/zstd_test.go
+++ b/zstd_test.go
@@ -1,3 +1,4 @@
+//go:build !functional
 package sarama
 
 import (