diff --git a/packages/cloudflare/src/utils/commonjs.ts b/packages/cloudflare/src/utils/commonjs.ts
deleted file mode 100644
index 23a9b97f9fc1..000000000000
--- a/packages/cloudflare/src/utils/commonjs.ts
+++ /dev/null
@@ -1,8 +0,0 @@
-/** Detect CommonJS. */
-export function isCjs(): boolean {
-  try {
-    return typeof module !== 'undefined' && typeof module.exports !== 'undefined';
-  } catch {
-    return false;
-  }
-}
diff --git a/packages/google-cloud-serverless/package.json b/packages/google-cloud-serverless/package.json
index 5b2caff2b00b..5db18b752c8b 100644
--- a/packages/google-cloud-serverless/package.json
+++ b/packages/google-cloud-serverless/package.json
@@ -49,7 +49,8 @@
   },
   "dependencies": {
     "@sentry/core": "10.32.1",
-    "@sentry/node": "10.32.1"
+    "@sentry/node": "10.32.1",
+    "@sentry/node-core": "10.32.1"
   },
   "devDependencies": {
     "@google-cloud/bigquery": "^5.3.0",
diff --git a/packages/google-cloud-serverless/src/sdk.ts b/packages/google-cloud-serverless/src/sdk.ts
index 2699eb4f9e2f..1161ab60300e 100644
--- a/packages/google-cloud-serverless/src/sdk.ts
+++ b/packages/google-cloud-serverless/src/sdk.ts
@@ -2,13 +2,10 @@ import type { Integration, Options } from '@sentry/core';
 import { applySdkMetadata } from '@sentry/core';
 import type { NodeClient, NodeOptions } from '@sentry/node';
 import { getDefaultIntegrationsWithoutPerformance, init as initNode } from '@sentry/node';
+import { isCjs } from '@sentry/node-core';
 import { googleCloudGrpcIntegration } from './integrations/google-cloud-grpc';
 import { googleCloudHttpIntegration } from './integrations/google-cloud-http';
 
-function isCjs(): boolean {
-  return typeof require !== 'undefined';
-}
-
 function getCjsOnlyIntegrations(): Integration[] {
   return isCjs()
     ? [