Fix tslint issues

1 files changed, 1 insertions, 1 deletions

diff --git a/packages/sol-resolver/src/resolvers/npm_resolver.ts b/packages/sol-resolver/src/resolvers/npm_resolver.ts
index 2c0a44aad..9f8617145 100644
--- a/packages/sol-resolver/src/resolvers/npm_resolver.ts
+++ b/packages/sol-resolver/src/resolvers/npm_resolver.ts
@@ -6,7 +6,7 @@ import { ContractSource } from '../types';
 import { Resolver } from './resolver';
 
 export class NPMResolver extends Resolver {
-    private _packagePath: string;
+    private readonly _packagePath: string;
     constructor(packagePath: string) {
         super();
         this._packagePath = packagePath;