diff --git a/go.mod b/go.mod
index c864fc1..6144340 100644
--- a/go.mod
+++ b/go.mod
@@ -1,7 +1,7 @@
 module github.com/Unleash/unleash-client-go/v4
 
 require (
-	github.com/Masterminds/semver/v4 v4.1.1
+	github.com/Masterminds/semver/v3 v3.1.1
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/nbio/st v0.0.0-20140626010706-e9e8d9816f32 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
diff --git a/go.sum b/go.sum
deleted file mode 100644
index 82c791d..0000000
--- a/go.sum
+++ /dev/null
@@ -1,16 +0,0 @@
-github.com/Masterminds/semver/v4 v4.1.1 h1:hLg3sBzpNErnxhQtUy/mmLR2I9foDujNK030IGemrRc=
-github.com/Masterminds/semver/v4 v4.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv4lAwl/skON4iLHjSsI+c5H38=
-github.com/nbio/st v0.0.0-20140626010706-e9e8d9816f32 h1:W6apQkHrMkS0Muv8G/TipAy/FJl/rCYT0+EuS8+Z0z4=
-github.com/nbio/st v0.0.0-20140626010706-e9e8d9816f32/go.mod h1:9wM+0iRr9ahx58uYLpLIr5fm8diHn0JbqRycJi6w0Ms=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/stretchr/objx v0.1.1 h1:2vfRuCMp5sSVIDSqO8oNnWJq7mPa6KVP3iPIwFBuy8A=
-github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
-github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
-github.com/twmb/murmur3 v1.1.5 h1:i9OLS9fkuLzBXjt6dptlAEyk58fJsSTXbRg3SgVyqgk=
-github.com/twmb/murmur3 v1.1.5/go.mod h1:Qq/R7NUyOfr65zD+6Q5IHKsJLwP7exErjN6lyyq3OSQ=
-gopkg.in/h2non/gock.v1 v1.0.10 h1:D4j796HhgidcxF0LnDyFXcoEbEZWoLEWf0kRh61p22w=
-gopkg.in/h2non/gock.v1 v1.0.10/go.mod h1:KHI4Z1sxDW6P4N3DfTWSEza07YpkQP7KJBfglRMEjKY=
diff --git a/internal/constraints/operator_semver.go b/internal/constraints/operator_semver.go
index 660a78a..767549a 100644
--- a/internal/constraints/operator_semver.go
+++ b/internal/constraints/operator_semver.go
@@ -1,7 +1,7 @@
 package constraints
 
 import (
-	"github.com/Masterminds/semver/v4"
+	"github.com/Masterminds/semver/v3"
 	"github.com/Unleash/unleash-client-go/v4/api"
 	"github.com/Unleash/unleash-client-go/v4/context"
 )