diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 0000000..a0b4f49
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,10 @@
+declare module 'redux-persist-transform-immutable' {
+    import { Record } from 'immutable'
+    import { Transform } from 'redux-persist/es/types'
+
+    interface Config {
+        records: Record[]
+    }
+
+    export default function<HSS, ESS, S = any, RS = any>(config?: Config): Transform<HSS, ESS, S, RS>
+}