diff --git a/tests/webhooks.rs b/tests/webhooks.rs
index 655ea0c..4b363fb 100644
--- a/tests/webhooks.rs
+++ b/tests/webhooks.rs
@@ -169,11 +169,16 @@ async fn pod_is_deleted_within(context: &TestContext, name: &str, timeout: Durat
     false
 }
 
+const DELETE_AFTER_SECS: u64 = 10;
+const DELETE_AFTER: Duration = Duration::from_secs(DELETE_AFTER_SECS);
+const DELETE_DELAY_APPROX_SECS: u64 = DELETE_AFTER_SECS * 60 / 100;
+const DELETE_DELAY_APPROX: Duration = Duration::from_secs(DELETE_DELAY_APPROX_SECS);
+
 #[tokio::test]
 async fn should_delay_deletion_by_kubectl_delete() {
     within_test_namespace(|context| async move {
         let config = Config {
-            delete_after: Duration::from_secs(10),
+            delete_after: DELETE_AFTER,
             experimental_general_ingress: true,
         };
         setup(&context, config).await;
@@ -235,11 +240,11 @@ spec:
             let context = Arc::clone(&context);
             async move {
                 let start = Instant::now();
-                kubectl!(&context, ["delete", "pod", "some-pod", "--wait=false"]);
+                kubectl!(&context, ["delete", "pod", "some-pod"]);
                 let duration = Instant::now() - start;
 
                 assert!(
-                    duration > Duration::from_secs(10 - 2),
+                    duration > DELETE_DELAY_APPROX,
                     "should be delayed approx. 10s"
                 );
             }
@@ -276,10 +281,10 @@ spec:
             let context = Arc::clone(&context);
             async move {
                 let start = Instant::now();
-                kubectl!(&context, ["delete", "pod", "some-pod", "--wait=false"]);
+                kubectl!(&context, ["delete", "pod", "some-pod"]);
                 let duration = Instant::now() - start;
                 assert!(
-                    duration > Duration::from_secs(10 - 2),
+                    duration > DELETE_DELAY_APPROX,
                     "should still wait approx. 10s"
                 );
             }
@@ -287,7 +292,7 @@ spec:
         assert!(event_tracker.issued_soon("DelayDeletion", "Draining").await);
 
         assert!(
-            pod_is_alive_for(&context, "some-pod", Duration::from_secs(10 - 2)).await,
+            pod_is_alive_for(&context, "some-pod", DELETE_DELAY_APPROX).await,
             "pod is alive for approx. 10s"
         );
 
@@ -295,7 +300,7 @@ spec:
         second.await.unwrap();
 
         assert!(
-            pod_is_deleted_within(&context, "some-pod", Duration::from_secs(10)).await,
+            pod_is_deleted_within(&context, "some-pod", Duration::from_secs(20)).await,
             "pod is eventually deleted"
         );
     })
@@ -306,7 +311,7 @@ spec:
 async fn should_allow_deletion_when_pod_is_not_ready() {
     within_test_namespace(|context| async move {
         let config = Config {
-            delete_after: Duration::from_secs(10),
+            delete_after: DELETE_AFTER,
             experimental_general_ingress: true,
         };
         setup(&context, config).await;
@@ -374,7 +379,7 @@ spec:
 async fn should_allow_deletion_when_pod_is_not_exposed() {
     within_test_namespace(|context| async move {
         let config = Config {
-            delete_after: Duration::from_secs(10),
+            delete_after: DELETE_AFTER,
             experimental_general_ingress: true,
         };
         setup(&context, config).await;
@@ -406,7 +411,7 @@ async fn should_allow_deletion_when_pod_is_not_exposed() {
 async fn should_allow_deletion_when_dry_run() {
     within_test_namespace(|context| async move {
         let config = Config {
-            delete_after: Duration::from_secs(10),
+            delete_after: DELETE_AFTER,
             experimental_general_ingress: true,
         };
         setup(&context, config).await;
@@ -434,7 +439,7 @@ async fn should_allow_deletion_when_dry_run() {
 async fn should_delay_deletion_by_deployment_rollout() {
     within_test_namespace(|context| async move {
         let config = Config {
-            delete_after: Duration::from_secs(10),
+            delete_after: DELETE_AFTER,
             experimental_general_ingress: true,
         };
         setup(&context, config).await;
@@ -542,7 +547,7 @@ spec:
         assert!(event_tracker.issued_soon("DelayDeletion", "Drain").await);
 
         assert!(
-            pod_is_alive_for(&context, &pod_name, Duration::from_secs(10 - 2)).await,
+            pod_is_alive_for(&context, &pod_name, DELETE_DELAY_APPROX).await,
             "pod is alive for approx. 10s"
         );
 
@@ -552,7 +557,7 @@ spec:
         );
 
         assert!(
-            pod_is_deleted_within(&context, &pod_name, Duration::from_secs(10)).await,
+            pod_is_deleted_within(&context, &pod_name, Duration::from_secs(20)).await,
             "pod is eventually deleted"
         );
     })