diff --git a/.github/actions/test-network-setup/action.yaml b/.github/actions/test-network-setup/action.yaml
index f0f17e2323..fcc93da28d 100644
--- a/.github/actions/test-network-setup/action.yaml
+++ b/.github/actions/test-network-setup/action.yaml
@@ -3,7 +3,7 @@ description: Set up the Test Network Runtime
 inputs:
   go-version:
     description: Version of go
-    default: '1.22'
+    default: '1.21'
   node-version:
     description: Version of node
     default: 18.x
diff --git a/asset-transfer-basic/chaincode-external/Dockerfile b/asset-transfer-basic/chaincode-external/Dockerfile
index 8341e6fd50..fc468cd7c6 100644
--- a/asset-transfer-basic/chaincode-external/Dockerfile
+++ b/asset-transfer-basic/chaincode-external/Dockerfile
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
-ARG GO_VER=1.22
+ARG GO_VER=1.21
 ARG ALPINE_VER=3.20
 
 FROM golang:${GO_VER}-alpine${ALPINE_VER}
diff --git a/asset-transfer-basic/chaincode-go/go.mod b/asset-transfer-basic/chaincode-go/go.mod
index ff0c2edf42..35dcb579f2 100644
--- a/asset-transfer-basic/chaincode-go/go.mod
+++ b/asset-transfer-basic/chaincode-go/go.mod
@@ -2,8 +2,6 @@ module github.com/hyperledger/fabric-samples/asset-transfer-basic/chaincode-go
 
 go 1.21
 
-toolchain go1.22.4
-
 require (
 	github.com/hyperledger/fabric-chaincode-go/v2 v2.0.0-20240618210511-f7903324a8af
 	github.com/hyperledger/fabric-contract-api-go/v2 v2.0.0