diff --git a/packages/service-worker/worker/src/driver.ts b/packages/service-worker/worker/src/driver.ts
index 106d3a45ca..bfb1a66861 100644
--- a/packages/service-worker/worker/src/driver.ts
+++ b/packages/service-worker/worker/src/driver.ts
@@ -722,18 +722,16 @@ export class Driver implements Debuggable, UpdateSource {
   }
 
   private async deleteAllCaches(): Promise<void> {
-    await (await this.scope.caches.keys())
-        // The Chrome debugger is not able to render the syntax properly when the
-        // code contains backticks. This is a known issue in Chrome and they have an
-        // open [issue](https://bugs.chromium.org/p/chromium/issues/detail?id=659515) for that.
-        // As a work-around for the time being, we can use \\ ` at the end of the line.
-        .filter(key => key.startsWith(`${this.adapter.cacheNamePrefix}:`))  // `
-        .reduce(async (previous, key) => {
-          await Promise.all([
-            previous,
-            this.scope.caches.delete(key),
-          ]);
-        }, Promise.resolve());
+    const cacheNames = await this.scope.caches.keys();
+    const ownCacheNames =
+        cacheNames
+            // The Chrome debugger is not able to render the syntax properly when the
+            // code contains backticks. This is a known issue in Chrome and they have an
+            // open [issue](https://bugs.chromium.org/p/chromium/issues/detail?id=659515) for that.
+            // As a work-around for the time being, we can use \\ ` at the end of the line.
+            .filter(name => name.startsWith(`${this.adapter.cacheNamePrefix}:`));  // `
+
+    await Promise.all(ownCacheNames.map(name => this.scope.caches.delete(name)));
   }
 
   /**