diff --git a/ts/00_commitinfo_data.ts b/ts/00_commitinfo_data.ts
index f0250a6..23c73bf 100644
--- a/ts/00_commitinfo_data.ts
+++ b/ts/00_commitinfo_data.ts
@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartdata',
-  version: '5.0.34',
+  version: '5.0.35',
   description: 'do more with data'
 }
diff --git a/ts/smartdata.classes.easystore.ts b/ts/smartdata.classes.easystore.ts
index 3dce552..4ddb4f6 100644
--- a/ts/smartdata.classes.easystore.ts
+++ b/ts/smartdata.classes.easystore.ts
@@ -70,7 +70,7 @@ export class EasyStore<T> {
   /**
    * writes a specific key to the keyValueStore
    */
-  public async writeKey(keyArg: keyof T, valueArg: any) {
+  public async writeKey<TKey extends keyof T>(keyArg: TKey, valueArg: T[TKey]) {
     const easyStore = await this.getEasyStore();
     easyStore.data[keyArg] = valueArg;
     await easyStore.save();