diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ae6bae5..2e6eb1e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -33,7 +33,7 @@ composer_update:
   script:
     - git ${JOB_GIT_FLAGS} fetch origin ${TARGET_BRANCH}
     - git ${JOB_GIT_FLAGS} checkout ${TARGET_BRANCH}
-    - git pull
+    - git pull --allow-unrelated-histories
     - export DATE_TIME="$(date '+%Y%m%d%H%M%S')"
     - export MR_BRANCH="${UPDATE_BRANCH_PREFIX}${DATE_TIME}"
     - git ${JOB_GIT_FLAGS} checkout -b "${MR_BRANCH}"