diff --git a/.github/workflows/cleanup-review-environment.yml b/.github/workflows/cleanup-review-environment.yml
new file mode 100644
index 00000000..f9dc7e87
--- /dev/null
+++ b/.github/workflows/cleanup-review-environment.yml
@@ -0,0 +1,51 @@
+name: Destroy Review Environment on PR closure
+
+on:
+  repository_dispatch:
+    types: [cleanup-review-environment]
+
+concurrency:
+  group: cleanup-${{ github.event.client_payload.github-app }}-${{ github.event.client_payload.github-pr }}
+  cancel-in-progress: true
+
+jobs:
+  destroy-gitlab-environment:
+    name: Destroy GitLab Review Environment
+    runs-on: ubuntu-latest
+    environment:
+      name: dial-review
+    steps:
+      - name: Destroy review environment on PR merge
+        env:
+          APP: ${{ github.event.client_payload.github-app }}
+          PR_ID: ${{ github.event.client_payload.github-pr }}
+          GL_HOST: https://${{ vars.DEPLOY_HOST }}
+          DESTROY_TOKEN: ${{ secrets.DESTROY_ACCESS_TOKEN }}
+          GL_PROJECT_ID: ${{ vars.DEPLOY_PROJECT_ID }}
+        shell: bash  
+        run: |
+          # Hack, pipeline to return the exit status of the last command to fail (instead of the last command). Exit immediately if any command returns a non-zero exit status.
+          set -euo pipefail
+
+          # Get environment name to get gitlab environment ID
+          ENV_NAME="$APP/pr-$PR_ID"
+
+          GL_API_URL="${GL_HOST}/api/v4/projects/${GL_PROJECT_ID}/environments"
+          curl_gl_api() { curl -sS --fail-with-body --retry 5 --retry-all-errors --retry-delay 3 \
+            -H "PRIVATE-TOKEN: $DESTROY_TOKEN" "$@"; }
+
+          ENV_ID=$(curl_gl_api --get --url-query "name=$ENV_NAME" "$GL_API_URL" | jq -r '.[0].id // empty')
+          [ -n "$ENV_ID" ] || { echo "::notice::No environment '$ENV_NAME'"; exit 0; }
+
+          # Stop environment state and get current state
+          STATE=$(curl_gl_api -X POST "$GL_API_URL/$ENV_ID/stop" | jq -r '.state')
+
+          # Check environment state
+          DEADLINE=$((SECONDS + 600))
+          while [ "$STATE" = "stopping" ]; do
+            [ "$SECONDS" -lt "$DEADLINE" ] || { echo "::error::timed out in 'stopping'"; exit 1; }
+            echo "The environment is still stopping, checking again..."
+            sleep 15
+            STATE=$(curl_gl_api "$GL_API_URL/$ENV_ID" | jq -r '.state')
+          done
+          [ "$STATE" = "stopped" ] && { echo "Environment ${ENV_NAME} is stopped"; exit 0; } || { echo "::error::unexpected state '$STATE'"; exit 1; }
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