diff --git a/src/index.ts b/src/index.ts
index 748f00e..eff6f41 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,5 +1,4 @@
 import { TinyEmitter } from 'tiny-emitter';
-import { v4 as uuidv4 } from 'uuid';
 import Metrics from './metrics';
 import type IStorageProvider from './storage-provider';
 import InMemoryStorageProvider from './storage-provider-inmemory';
@@ -11,6 +10,7 @@ import {
     urlWithContextAsQuery,
 } from './util';
 import { sdkVersion } from './version';
+import { uuidv4 } from './uuidv4';
 
 const DEFINED_FIELDS = [
     'userId',
diff --git a/src/uuidv4.ts b/src/uuidv4.ts
new file mode 100644
index 0000000..7929359
--- /dev/null
+++ b/src/uuidv4.ts
@@ -0,0 +1,14 @@
+/**
+ * This function generates a UUID using Math.random().
+ * The distribution of unique values is not guaranteed to be as robust
+ * as with a crypto module but works across all platforms (Node, React Native, browser JS).
+ *
+ * We use it for connection id generation which is not critical for security.
+ */
+export const uuidv4 = (): string => {
+    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
+        const r = (Math.random() * 16) | 0;
+        const v = c === 'x' ? r : (r & 0x3) | 0x8;
+        return v.toString(16);
+    });
+};