diff --git a/packages/json-rpc/src/jsonrpcclient.spec.ts b/packages/json-rpc/src/jsonrpcclient.spec.ts
index 2af43e90..a14cc3f2 100644
--- a/packages/json-rpc/src/jsonrpcclient.spec.ts
+++ b/packages/json-rpc/src/jsonrpcclient.spec.ts
@@ -17,13 +17,11 @@ function makeSimpleMessagingConnection(
 ): SimpleMessagingConnection<JsonRpcRequest, JsonRpcResponse> {
   const producer: Producer<JsonRpcResponse> = {
     start: (listener) => {
-      // tslint:disable-next-line:no-object-mutation
       worker.onmessage = (event) => {
         listener.next(parseJsonRpcResponse(event.data));
       };
     },
     stop: () => {
-      // tslint:disable-next-line:no-object-mutation
       worker.onmessage = null;
     },
   };
diff --git a/packages/json-rpc/tslint.json b/packages/json-rpc/tslint.json
deleted file mode 100644
index 0946f209..00000000
--- a/packages/json-rpc/tslint.json
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-  "extends": "../../tslint.json"
-}