diff --git a/.gitlab-ci/container/gitlab-ci.yml b/.gitlab-ci/container/gitlab-ci.yml
index 22e19ae216d..3d6169c6c6c 100644
--- a/.gitlab-ci/container/gitlab-ci.yml
+++ b/.gitlab-ci/container/gitlab-ci.yml
@@ -221,7 +221,7 @@ debian/arm64_build:
     - .fdo.container-build@alpine
     - .container
   variables:
-    FDO_DISTRIBUTION_VERSION: "edge"  # switch to 3.20 when gets released
+    FDO_DISTRIBUTION_VERSION: "3.21"
     FDO_BASE_IMAGE: alpine:$FDO_DISTRIBUTION_VERSION  # since cbuild ignores it
 
 # Alpine based x86_64 build image