diff --git a/.github/workflows/upload-and-deploy.yaml b/.github/workflows/upload-and-deploy.yaml
index b1723ac3..48b9e0e3 100755
--- a/.github/workflows/upload-and-deploy.yaml
+++ b/.github/workflows/upload-and-deploy.yaml
@@ -233,7 +233,18 @@ jobs:
       - name: "Deploy sceptre stacks to dev"
         run: pipenv run sceptre --var "namespace=${{ env.NAMESPACE }}" launch develop --yes
 
-      - name: Configure S3 to Glue lambda with S3 trigger
+      - name: Delete preexisting S3 event notification for this namespace
+        uses: gagoar/invoke-aws-lambda@v3
+        with:
+          AWS_ACCESS_KEY_ID: ${{ env.AWS_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ env.AWS_SECRET_ACCESS_KEY }}
+          AWS_SESSION_TOKEN: ${{ env.AWS_SESSION_TOKEN }}
+          REGION: ${{ env.AWS_REGION }}
+          FunctionName: ${{ env.NAMESPACE }}-S3EventConfig
+          Payload: '{"RequestType": "Delete"}'
+          LogType: Tail
+
+      - name: Create S3 event notification for this namespace
         uses: gagoar/invoke-aws-lambda@v3
         with:
           AWS_ACCESS_KEY_ID: ${{ env.AWS_ACCESS_KEY_ID }}