diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 56c28f471b4f894c07ec32bf4ccc186afb0784ef..6fe11f0cbbb62fa1c63426b15a95616c821b08fd 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -20,7 +20,7 @@ preflight:
     - forgelib-preflight https://$CI_SERVER_HOST $CI_PROJECT_ID $CI_MERGE_REQUEST_IID
 
 process_asn:
-  image: "forge.3gpp.org:5050/sa3/li/asn1test:latest"
+  image: "forge.3gpp.org:5050/sa3/li/asn1test:test_python_upgrade"
   stage: check
   interruptible: true
   script: