diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 07348238d..09b0052c5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,9 +1,17 @@
 image: registry.gitlab.gnome.org/gnome/mutter/master:v1
 
 stages:
+ - review
  - build
  - test
 
+check-commit-log:
+  stage: review
+  script:
+    - ./.gitlab-ci/check-commit-log.sh
+  only:
+    - merge_requests
+
 build-mutter:
   stage: build
   script:
@@ -14,6 +22,9 @@ build-mutter:
     expire_in: 1 day
     paths:
       - build
+  only:
+    - merge_requests
+    - /^.*$/
 
 test-mutter:
   stage: test
@@ -28,3 +39,6 @@ test-mutter:
     - >
       dbus-run-session -- xvfb-run -s '+iglx -noreset'
       meson test -C build --no-rebuild -t 10 --verbose --no-stdsplit --wrap catchsegv
+  only:
+    - merge_requests
+    - /^.*$/
diff --git a/.gitlab-ci/check-commit-log.sh b/.gitlab-ci/check-commit-log.sh
new file mode 100755
index 000000000..cc3bcee60
--- /dev/null
+++ b/.gitlab-ci/check-commit-log.sh
@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+if [ -z "$CI_MERGE_REQUEST_TARGET_BRANCH_NAME" ]; then
+  echo Cannot review non-merge request
+  exit 1
+fi
+
+git fetch $CI_MERGE_REQUEST_PROJECT_URL.git $CI_MERGE_REQUEST_TARGET_BRANCH_NAME
+
+branch_point=$(git merge-base HEAD FETCH_HEAD)
+
+commits=$(git log --format='format:%H' $branch_point..$CI_COMMIT_SHA)
+
+if [ -z "$commits" ]; then
+  echo Commit range empty
+  exit 1
+fi
+
+function commit_message_has_url() {
+  commit=$1
+  commit_message=$(git show -s --format='format:%b' $commit)
+  echo "$commit_message" | grep -qe "\($CI_MERGE_REQUEST_PROJECT_URL/\(issues\|merge_requests\)/[0-9]\+\|https://bugzilla.gnome.org/show_bug.cgi?id=[0-9]\+\)"
+  return $?
+}
+
+for commit in $commits; do
+  if ! commit_message_has_url $commit; then
+    echo "Missing merge request or issue URL on commit $(echo $commit | cut -c -8)"
+    exit 1
+  fi
+done