diff --git a/go.mod b/go.mod
index 403416c..83032b7 100644
--- a/go.mod
+++ b/go.mod
@@ -1,8 +1,6 @@
 module github.com/datachainlab/ethereum-ibc-relay-chain
 
-go 1.21
-
-toolchain go1.22.2
+go 1.21.0
 
 require (
 	github.com/avast/retry-go v3.0.0+incompatible