diff --git a/packages/happy-dom/src/async-task-manager/AsyncTaskManager.ts b/packages/happy-dom/src/async-task-manager/AsyncTaskManager.ts
index 628f67dec..ef08e634e 100644
--- a/packages/happy-dom/src/async-task-manager/AsyncTaskManager.ts
+++ b/packages/happy-dom/src/async-task-manager/AsyncTaskManager.ts
@@ -137,7 +137,7 @@ export default class AsyncTaskManager {
 					} else {
 						this.endTimer(timerID);
 					}
-				});
+				}, 10);
 				this.startTimer(timerID);
 			}
 		}
diff --git a/packages/happy-dom/test/fetch/Fetch.test.ts b/packages/happy-dom/test/fetch/Fetch.test.ts
index 9c28b60c4..22c63f13e 100644
--- a/packages/happy-dom/test/fetch/Fetch.test.ts
+++ b/packages/happy-dom/test/fetch/Fetch.test.ts
@@ -3427,7 +3427,7 @@ describe('Fetch', () => {
 			setTimeout(() => {
 				expect(isAsyncComplete).toBe(true);
 				resolve(null);
-			}, 110);
+			}, 120);
 		});
 	});
 });
diff --git a/packages/happy-dom/test/fetch/Request.test.ts b/packages/happy-dom/test/fetch/Request.test.ts
index a26e85d3e..b75c4f9ad 100644
--- a/packages/happy-dom/test/fetch/Request.test.ts
+++ b/packages/happy-dom/test/fetch/Request.test.ts
@@ -498,7 +498,7 @@ describe('Request', () => {
 				setTimeout(() => {
 					expect(isAsyncComplete).toBe(true);
 					resolve(null);
-				}, 20);
+				}, 30);
 			});
 		});
 	});
@@ -539,7 +539,7 @@ describe('Request', () => {
 				setTimeout(() => {
 					expect(isAsyncComplete).toBe(true);
 					resolve(null);
-				}, 20);
+				}, 30);
 			});
 		});
 	});
@@ -573,7 +573,7 @@ describe('Request', () => {
 				setTimeout(() => {
 					expect(isAsyncComplete).toBe(true);
 					resolve(null);
-				}, 20);
+				}, 30);
 			});
 		});
 	});
@@ -606,7 +606,7 @@ describe('Request', () => {
 				setTimeout(() => {
 					expect(isAsyncComplete).toBe(true);
 					resolve(null);
-				}, 20);
+				}, 30);
 			});
 		});
 	});
@@ -641,7 +641,7 @@ describe('Request', () => {
 				setTimeout(() => {
 					expect(isAsyncComplete).toBe(true);
 					resolve(null);
-				}, 20);
+				}, 30);
 			});
 		});
 	});
@@ -677,7 +677,7 @@ describe('Request', () => {
 				setTimeout(() => {
 					expect(isAsyncComplete).toBe(true);
 					resolve(null);
-				}, 20);
+				}, 30);
 			});
 		});
 	});
diff --git a/packages/happy-dom/test/fetch/Response.test.ts b/packages/happy-dom/test/fetch/Response.test.ts
index 4d2e3b675..93121e273 100644
--- a/packages/happy-dom/test/fetch/Response.test.ts
+++ b/packages/happy-dom/test/fetch/Response.test.ts
@@ -135,7 +135,7 @@ describe('Response', () => {
 				setTimeout(() => {
 					expect(isAsyncComplete).toBe(true);
 					resolve(null);
-				}, 20);
+				}, 30);
 			});
 		});
 	});
@@ -172,7 +172,7 @@ describe('Response', () => {
 				setTimeout(() => {
 					expect(isAsyncComplete).toBe(true);
 					resolve(null);
-				}, 20);
+				}, 30);
 			});
 		});
 	});
@@ -241,7 +241,7 @@ describe('Response', () => {
 				setTimeout(() => {
 					expect(isAsyncComplete).toBe(true);
 					resolve(null);
-				}, 20);
+				}, 30);
 			});
 		});
 	});
@@ -276,7 +276,7 @@ describe('Response', () => {
 				setTimeout(() => {
 					expect(isAsyncComplete).toBe(true);
 					resolve(null);
-				}, 20);
+				}, 30);
 			});
 		});
 	});
@@ -385,7 +385,7 @@ describe('Response', () => {
 				setTimeout(() => {
 					expect(isAsyncComplete).toBe(true);
 					resolve(null);
-				}, 20);
+				}, 30);
 			});
 		});
 
@@ -409,7 +409,7 @@ describe('Response', () => {
 				setTimeout(() => {
 					expect(isAsyncComplete).toBe(true);
 					resolve(null);
-				}, 20);
+				}, 30);
 			});
 		});
 	});