diff --git a/.github/workflows/stats-lambda.yml b/.github/workflows/stats-lambda.yml
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+# This workflow executes a Lamdba function that records metrics for each merged PR.
+#
+# For more information, see:
+# https://github.com/marketplace/actions/invoke-aws-lambda
+
+name: Trigger Lambda to capture metrics
+on:   # yamllint disable-line rule:truthy
+  pull_request:
+    types:
+      - closed
+  workflow_dispatch:
+env:
+  COMMIT: ${{github.event.pull_request.head.sha}}
+  PR_AUTHOR: ${{ github.event.pull_request.user.login }}
+jobs:
+  if_merged:
+    if: github.event.pull_request.merged == true
+    runs-on: ubuntu-latest
+    name: GitHub Statistics
+    steps:
+      - name: Create payload
+        run: echo "JSON_PAYLOAD={\"commit\" :\"${{ env.COMMIT }}\",\"author\" :\"${{ env.PR_AUTHOR }}\"}" >> $GITHUB_ENV
+      - name: Invoke Lambda
+        uses: gagoar/invoke-aws-lambda@master
+        with:
+          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_ACCESS_SECRET_KEY_ID }}
+          REGION: 'eu-west-1'
+          FunctionName: runTheNumbers
+          Payload: ${{env.JSON_PAYLOAD}}
+          InvocationType: RequestResponse
+          LogType: None