diff --git a/.env b/.env
index 2a010b9b05..23df715e70 100644
--- a/.env
+++ b/.env
@@ -1,2 +1,2 @@
 ATS_VERSION=9.1.2
-GO_VERSION=1.21.4
+GO_VERSION=1.21.5
diff --git a/GO_VERSION b/GO_VERSION
index 20a1265cf3..ce2dd53570 100644
--- a/GO_VERSION
+++ b/GO_VERSION
@@ -1 +1 @@
-1.21.4
+1.21.5