diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 387a6f918a5b8466f1960b7fcbf67ac736216635..95a4cdd9dd8eeefddda995b272de201918d77c16 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -21,7 +21,7 @@ variables:
   # maybe validate
   - 'if [[ -n "$VALIDATE" ]]; then make validate; fi'
   # maybe create opam package
-  - 'if [[ -n "$OPAM_PKG" && "$CI_COMMIT_REF_NAME" == master ]]; then curl --fail -X POST -F "token=$OPAM_UPDATE_SECRET" -F "ref=master" -F "variables[REPO]=$CI_PROJECT_URL.git" -F "variables[REF]=$CI_COMMIT_REF_NAME" -F "variables[SHA]=$CI_COMMIT_SHA" -F "variables[NAME]=$OPAM_PKG" https://gitlab.mpi-sws.org/api/v4/projects/581/trigger/pipeline; fi'
+  - 'if [[ -n "$OPAM_PKG" && "$CI_COMMIT_REF_NAME" == gen_proofmode ]]; then curl --fail -X POST -F "token=$OPAM_UPDATE_SECRET" -F "ref=master" -F "variables[REPO]=$CI_PROJECT_URL.git" -F "variables[REF]=$CI_COMMIT_REF_NAME" -F "variables[SHA]=$CI_COMMIT_SHA" -F "variables[NAME]=$OPAM_PKG" -F "variables[OPAM_PREFIX]=branch.gen_proofmode" https://gitlab.mpi-sws.org/api/v4/projects/581/trigger/pipeline; fi'
   cache:
     key: "$CI_JOB_NAME"
     paths: