diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c4c30408..41d69ac4 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -169,6 +169,7 @@ publish-to-foundry-admin:
     variables:
         FVTT_MANIFEST_PATH: ds4/system.json
         FVTT_MANIFEST_URL: ${CI_PROJECT_URL}/-/releases/${CI_COMMIT_TAG}/downloads/system.json
+        FVTT_DELETE_OBSOLETE_VERSIONS: "true"
     script: foundry-publish
     rules:
         - if: '$CI_COMMIT_TAG =~ /^[0-9]+\.[0-9]+\.[0-9]+$/'