diff --git a/lib/cache/PackFileCacheStrategy.js b/lib/cache/PackFileCacheStrategy.js
index cd6fd1da091..d940689f7e9 100644
--- a/lib/cache/PackFileCacheStrategy.js
+++ b/lib/cache/PackFileCacheStrategy.js
@@ -118,6 +118,14 @@ class Pack {
 				this.requests.push(undefined);
 				this.requestsTimeout = undefined;
 			}, MAX_TIME_IN_FRESH_PACK);
+			if (this.requestsTimeout.unref) this.requestsTimeout.unref();
+		}
+	}
+
+	stopCapturingRequests() {
+		if (this.requestsTimeout !== undefined) {
+			clearTimeout(this.requestsTimeout);
+			this.requestsTimeout = undefined;
 		}
 	}
 
@@ -1232,6 +1240,7 @@ class PackFileCacheStrategy {
 		const reportProgress = ProgressPlugin.getReporter(this.compiler);
 		return (this.storePromise = packPromise
 			.then(pack => {
+				pack.stopCapturingRequests();
 				if (!pack.invalid) return;
 				this.packPromise = undefined;
 				this.logger.log(`Storing pack...`);