diff --git a/.github/workflows/dev_on_pull_request_closed.yml b/.github/workflows/dev_on_pull_request_closed.yml
index 0a1babffcf8..6f2b7aab3f7 100644
--- a/.github/workflows/dev_on_pull_request_closed.yml
+++ b/.github/workflows/dev_on_pull_request_closed.yml
@@ -8,7 +8,7 @@ on:
 jobs:
   # Delete pcapi preview deployment
   delete-pcapi-preview-deployment:
-    name: "Delete pcapi preview deployment" 
+    name: "Delete pcapi preview deployment"
     runs-on: ubuntu-22.04
     permissions:
       id-token: write
@@ -16,14 +16,14 @@ jobs:
     steps:
       - uses: actions/checkout@v4.2.1
       - name: "Authentification to Google"
-        uses: 'google-github-actions/auth@v2'
+        uses: "google-github-actions/auth@v2"
         with:
           workload_identity_provider: ${{ secrets.GCP_EHP_WORKLOAD_IDENTITY_PROVIDER }}
           service_account: ${{ secrets.GCP_EHP_SERVICE_ACCOUNT }}
 
       - name: "Get secrets"
-        id: 'secrets'
-        uses: 'google-github-actions/get-secretmanager-secrets@v2'
+        id: "secrets"
+        uses: "google-github-actions/get-secretmanager-secrets@v2"
         with:
           secrets: |-
             API_TOKEN_GITHUB:passculture-metier-ehp/passculture-main-sa-access-token
@@ -31,13 +31,19 @@ jobs:
             DEPLOYMENT_SA:passculture-metier-ehp/pcapi-testing_deploy-service-account
             DEPLOYMENT_WORKLOAD_IDENTITY_PROVIDER:passculture-metier-ehp/gcp_metier_ehp_workload_identity_provider
 
+      # Set up Cloud SDK
+      - name: "Set up Cloud SDK"
+        uses: "google-github-actions/setup-gcloud@v2"
+        with:
+          version: ">= 363.0.0"
+
       # Checkout rendered-manifests repository
       - uses: actions/checkout@v4.2.1
         with:
           repository: pass-culture/rendered-manifests
           token: ${{ steps.secrets.outputs.API_TOKEN_GITHUB }}
           path: ./rendered-manifests
-          ref: 'pcapi/pullrequests'
+          ref: "pcapi/pullrequests"
 
       - name: "Delete PR deployment"
         run: |
@@ -55,9 +61,9 @@ jobs:
           fi
 
       - name: "Authentification to Google"
-        uses: 'google-github-actions/auth@v2'
+        uses: "google-github-actions/auth@v2"
         with:
-          service_account : ${{ steps.secrets.outputs.DEPLOYMENT_SA }}
+          service_account: ${{ steps.secrets.outputs.DEPLOYMENT_SA }}
           workload_identity_provider: ${{ steps.secrets.outputs.DEPLOYMENT_WORKLOAD_IDENTITY_PROVIDER }}
 
       - name: "Connect to cluster"
@@ -78,6 +84,10 @@ jobs:
           # Check for PR namespace and delete it
           kubectl get ns pcapi-pr-${{ github.event.pull_request.number }}
           [[ $? -eq 0 ]] && kubectl delete ns pcapi-pr-${{ github.event.pull_request.number }} || echo "namespace pcapi-pr-${{ github.event.pull_request.number }} does not exist"
+          # Set active project for DNS entry deletion
+          gcloud config set project passculture-metier-ehp
+          # Delete DNS entry
+          gcloud dns record-sets delete a-backend-${{ github.event.pull_request.number }}.testing.passculture.team. --type=TXT --zone=testing-passculture-team
 
   # Delete pro preview deployment
   delete-pro-firebase-preview-deployment:
@@ -89,14 +99,14 @@ jobs:
     steps:
       - uses: actions/checkout@v4.2.1
       - name: "Authentification to Google"
-        uses: 'google-github-actions/auth@v2'
+        uses: "google-github-actions/auth@v2"
         with:
           workload_identity_provider: ${{ secrets.GCP_EHP_WORKLOAD_IDENTITY_PROVIDER }}
           service_account: ${{ secrets.GCP_EHP_SERVICE_ACCOUNT }}
 
       - name: "Get secrets"
-        id: 'secrets'
-        uses: 'google-github-actions/get-secretmanager-secrets@v2'
+        id: "secrets"
+        uses: "google-github-actions/get-secretmanager-secrets@v2"
         with:
           secrets: |-
             FIREBASE_SERVICE_ACCOUNT_TESTING:passculture-metier-ehp/pc_pro_testing_firebase_json
diff --git a/.github/workflows/dev_on_schedule_delete_pullrequest_deployments.yml b/.github/workflows/dev_on_schedule_delete_pullrequest_deployments.yml
index baed2b4bdb6..2f2b93b2444 100644
--- a/.github/workflows/dev_on_schedule_delete_pullrequest_deployments.yml
+++ b/.github/workflows/dev_on_schedule_delete_pullrequest_deployments.yml
@@ -16,15 +16,15 @@ jobs:
     steps:
       - uses: actions/checkout@v4.2.1
       - name: "Authentification to Google"
-        uses: 'google-github-actions/auth@v2'
+        uses: "google-github-actions/auth@v2"
         with:
           workload_identity_provider: ${{ secrets.GCP_EHP_WORKLOAD_IDENTITY_PROVIDER }}
           service_account: ${{ secrets.GCP_EHP_SERVICE_ACCOUNT }}
 
       # Get github api token
       - name: "Get secrets (github)"
-        id: 'secrets'
-        uses: 'google-github-actions/get-secretmanager-secrets@v2'
+        id: "secrets"
+        uses: "google-github-actions/get-secretmanager-secrets@v2"
         with:
           secrets: |-
             API_TOKEN_GITHUB:passculture-metier-ehp/passculture-main-sa-access-token
@@ -37,14 +37,19 @@ jobs:
           repository: pass-culture/rendered-manifests
           token: ${{ steps.secrets.outputs.API_TOKEN_GITHUB }}
           path: ./rendered-manifests
-          ref: 'pcapi/pullrequests'
+          ref: "pcapi/pullrequests"
 
       - name: "Authentification to Google"
-        uses: 'google-github-actions/auth@v2'
+        uses: "google-github-actions/auth@v2"
         with:
-          service_account : ${{ steps.secrets.outputs.DEPLOYMENT_SA }}
+          service_account: ${{ steps.secrets.outputs.DEPLOYMENT_SA }}
           workload_identity_provider: ${{ steps.secrets.outputs.DEPLOYMENT_WORKLOAD_IDENTITY_PROVIDER }}
 
+      # Set up Cloud SDK
+      - name: "Set up Cloud SDK"
+        uses: "google-github-actions/setup-gcloud@v2"
+        with:
+          version: ">= 363.0.0"
 
       - name: "Connect to cluster"
         uses: pass-culture/common-workflows/actions/pc-k8s-connect@pc-k8s-connect/v0.1.0
@@ -74,6 +79,9 @@ jobs:
             git push
           fi
 
+          #Set active project for DNS entry deletion
+          gcloud config set project passculture-metier-ehp
+
           for id in $pullrequests_ids; do
             while true; do
               kubectl get application -n argocd | grep $id
@@ -82,4 +90,6 @@ jobs:
             # Check for PR namespace and delete it
             kubectl get ns pcapi-pr-$id
             [[ $? -eq 0 ]] && kubectl delete ns pcapi-pr-$id || echo "namespace pcapi-pr-$id does not exist"
+            # Delete DNS entry
+            gcloud dns record-sets delete a-backend-$id.testing.passculture.team. --type=TXT --zone=testing-passculture-team
           done