diff --git a/packages/type-definitions/CHANGELOG.md b/packages/type-definitions/CHANGELOG.md
index 23ea089..094bacd 100644
--- a/packages/type-definitions/CHANGELOG.md
+++ b/packages/type-definitions/CHANGELOG.md
@@ -1,3 +1,10 @@
+## [2.1.2-rc.1](https://github.com/mangata-finance/mangata-dev-kit/compare/@mangata-finance/type-definitions-v2.1.1...@mangata-finance/type-definitions-v2.1.2-rc.1) (2023-12-19)
+
+
+### Bug Fixes
+
+* update return type ([b394578](https://github.com/mangata-finance/mangata-dev-kit/commit/b3945780e17cff45303bd0052b0a7403caa4ec66))
+
 ## [2.1.1](https://github.com/mangata-finance/mangata-dev-kit/compare/@mangata-finance/type-definitions-v2.1.0...@mangata-finance/type-definitions-v2.1.1) (2023-12-19)
 
 
diff --git a/packages/type-definitions/package.json b/packages/type-definitions/package.json
index 608f156..1454970 100644
--- a/packages/type-definitions/package.json
+++ b/packages/type-definitions/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mangata-finance/type-definitions",
-  "version": "2.1.1",
+  "version": "2.1.2-rc.1",
   "description": "Type definitions for Mangata Finance",
   "repository": {
     "type": "git",
diff --git a/packages/type-definitions/src/index.ts b/packages/type-definitions/src/index.ts
index fc31b8c..90ed983 100644
--- a/packages/type-definitions/src/index.ts
+++ b/packages/type-definitions/src/index.ts
@@ -258,7 +258,7 @@ export const mRpc = {
           type: "AccountId"
         }
       ],
-      type: "[TokenId, TokenId, Balance][]"
+      type: "Vec<(TokenId, TokenId, Balance)>"
     }
   }
 };