diff --git a/lib/ntp-client.d.ts b/lib/ntp-client.d.ts
new file mode 100644
index 0000000..58c98df
--- /dev/null
+++ b/lib/ntp-client.d.ts
@@ -0,0 +1,9 @@
+declare module 'react-native-ntp-client' {
+  const ntpClient: {
+    defaultNtpPort: number;
+    defaultNtpServer: string;
+    ntpReplyTimeout: number;
+    getNetworkTime: (server: string, port: number, callback: (error: Object, date: Date) => void) => void;
+  };
+  export default ntpClient;
+}