diff --git a/.npmignore b/.npmignore
index 9739546e..4aba7e85 100644
--- a/.npmignore
+++ b/.npmignore
@@ -14,6 +14,7 @@ gqlschema.gql
 **/*.spec.d.ts
 **/*.spec.js
 **/*.js.map
+**/*.d.ts.map
 
 .eslintrc.js
 .prettierrc
diff --git a/tsconfig.json b/tsconfig.json
index 2df7934f..10462a05 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -3,6 +3,7 @@
     "module": "commonjs",
     "esModuleInterop": true,
     "declaration": true,
+    "declarationMap": true,
     "removeComments": false,
     "emitDecoratorMetadata": true,
     "experimentalDecorators": true,
@@ -50,4 +51,4 @@
       "path": "packages/transactional-adapters/transactional-adapter-typeorm"
     }
   ]
-}
\ No newline at end of file
+}