diff --git a/core/go.mod b/core/go.mod
index f4879e885..647b5f3ab 100644
--- a/core/go.mod
+++ b/core/go.mod
@@ -1,8 +1,6 @@
 module github.com/open-feature/flagd/core
 
-go 1.21
-
-toolchain go1.21.5
+go 1.20
 
 require (
 	buf.build/gen/go/open-feature/flagd/connectrpc/go v1.12.0-20231031123731-ac2ec0f39838.1