diff --git a/.github_build/Build.alpine.env b/.github_build/Build.alpine.env
index 0160b8f5..682475ed 100644
--- a/.github_build/Build.alpine.env
+++ b/.github_build/Build.alpine.env
@@ -1,5 +1,5 @@
 # CORE ALPINE BASE IMAGE
 OS_NAME=alpine
 OS_VERSION=3.16
-GOLANG_IMAGE=golang:1.21-alpine3.16
+GOLANG_IMAGE=golang:1.20-alpine3.16
 CORE_VERSION=16.13.1
diff --git a/.github_build/Build.ubuntu.env b/.github_build/Build.ubuntu.env
index 43b8c9b8..eaeccbf5 100644
--- a/.github_build/Build.ubuntu.env
+++ b/.github_build/Build.ubuntu.env
@@ -1,5 +1,5 @@
 # CORE UBUNTU BASE IMAGE
 OS_NAME=ubuntu
 OS_VERSION=20.04
-GOLANG_IMAGE=golang:1.21-alpine3.16
+GOLANG_IMAGE=golang:1.20-alpine3.16
 CORE_VERSION=16.13.1