diff --git a/.github/workflows/clean_up.yaml b/.github/workflows/clean_up.yaml
index edb14bb4..b5a84fed 100644
--- a/.github/workflows/clean_up.yaml
+++ b/.github/workflows/clean_up.yaml
@@ -41,13 +41,13 @@ jobs:
           webhookUrl: '${{ secrets.GOOGLE_WEBHOOK_URL }}'
           jobStatus: '${{ job.status }}'
           title: CLEAN-UP pipeline
-          subtitle: "${{ github.event_name }} with filter prefix <b>${{ inputs.res_prefix }}</b>"
+          subtitle: "${{ github.event_name }} with filter prefix \"${{ inputs.res_prefix }}\""
 
 #      - name: Notify
 #        uses: ./.github/actions/notify
 #        with:
 #          webhook_url: ${{ secrets.GOOGLE_WEBHOOK_URL }}
-#          title: CI pipeline started
+#          title: CLEAN-UP pipeline
 #          event_title: ${{ github.event.type }}
 #          event_author: ${{ github.event.actor.login }}
 #          event_body: "Filter: ${{ inputs.res_prefix }}"
diff --git a/.github/workflows/tf-acc-test.yaml b/.github/workflows/tf-acc-test.yaml
index 85c78437..cc76fd61 100644
--- a/.github/workflows/tf-acc-test.yaml
+++ b/.github/workflows/tf-acc-test.yaml
@@ -30,6 +30,14 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v6
 
+      - name: Notify Google Chat
+        if: ${{ always() }} # Use always to ensure that the notification is also send on failure of former steps
+        uses: SimonScholz/google-chat-action@main
+        with:
+          webhookUrl: '${{ secrets.GOOGLE_WEBHOOK_URL }}'
+          title: Acceptance Tests started
+          subtitle: "${{ github.event_name }}"
+
       - name: Notify
         uses: ./.github/actions/notify
         with:
@@ -71,6 +79,15 @@ jobs:
           tf_acc_kek_key_version: ${{ vars.TF_ACC_KEK_KEY_VERSION }}
           tf_acc_kek_service_account: ${{ vars.TF_ACC_KEK_SERVICE_ACCOUNT }}
 
+      - name: Notify Google Chat
+        if: ${{ always() }} # Use always to ensure that the notification is also send on failure of former steps
+        uses: SimonScholz/google-chat-action@main
+        with:
+          webhookUrl: '${{ secrets.GOOGLE_WEBHOOK_URL }}'
+          jobStatus: '${{ job.status }}'
+          title: Acceptance Tests started
+          subtitle: "${{ github.event_name }} finished"
+
       - name: Notify
         uses: ./.github/actions/notify
         with:
diff --git a/stackit/internal/services/postgresflexalpha/postgresflex_acc_test.go b/stackit/internal/services/postgresflexalpha/postgresflex_acc_test.go
index 6c057cfb..4dd1e6ea 100644
--- a/stackit/internal/services/postgresflexalpha/postgresflex_acc_test.go
+++ b/stackit/internal/services/postgresflexalpha/postgresflex_acc_test.go
@@ -157,6 +157,9 @@ func TestAccInstance(t *testing.T) {
 	updVersion := updNetACL
 	updVersion.Version = "17"
 
+	updRetention := updVersion
+	updRetention.RetentionDays = 40
+
 	testItemID := testutils.ResStr(pfx, "instance", exData.TfName)
 	compareValuesSame := statecheck.CompareValue(compare.ValuesSame())
 	resource.ParallelTest(
@@ -337,6 +340,23 @@ func TestAccInstance(t *testing.T) {
 						),
 					),
 				},
+				// Update retention_days
+				{
+					PreConfig: func() {
+						t.Logf("  ... %s - %s", t.Name(), "update version")
+					},
+					Config: testutils.StringFromTemplateMust(
+						"testdata/instance_template.gompl",
+						updVersion,
+					),
+					Check: resource.ComposeTestCheckFunc(
+						resource.TestCheckResourceAttr(
+							testItemID,
+							"retention_days",
+							strconv.Itoa(int(updVersion.RetentionDays)),
+						),
+					),
+				},
 				// Import test
 				// test instance imports
 				{
diff --git a/stackit/internal/services/sqlserverflexbeta/sqlserverflex_acc_test.go b/stackit/internal/services/sqlserverflexbeta/sqlserverflex_acc_test.go
index 77955dd5..399eed3f 100644
--- a/stackit/internal/services/sqlserverflexbeta/sqlserverflex_acc_test.go
+++ b/stackit/internal/services/sqlserverflexbeta/sqlserverflex_acc_test.go
@@ -142,6 +142,9 @@ func TestAccInstance(t *testing.T) {
 	updSizeData := exData
 	updSizeData.Size = 25
 
+	updRetentionDays := updSizeData
+	updRetentionDays.RetentionDays = 30
+
 	testInstanceID := testutils.ResStr(pfx, "instance", exData.TfName)
 
 	compareValuesSame := statecheck.CompareValue(compare.ValuesSame())
@@ -210,6 +213,20 @@ func TestAccInstance(t *testing.T) {
 					defaultNoEncInstanceTestChecks(testInstanceID, updSizeData),
 				),
 			},
+			// Update retention_days
+			{
+				PreConfig: func() {
+					t.Logf("testing: %s - %s", t.Name(), "update storage.retention_days and verify")
+				},
+				ExpectNonEmptyPlan: true,
+				Config: testutils.StringFromTemplateMust(
+					"testdata/instance_template.gompl",
+					updRetentionDays,
+				),
+				Check: resource.ComposeTestCheckFunc(
+					defaultNoEncInstanceTestChecks(testInstanceID, updRetentionDays),
+				),
+			},
 			// Import test
 			// test instance imports
 			{