diff --git a/index.js b/index.js
index b726ff45..a3759688 100644
--- a/index.js
+++ b/index.js
@@ -85,9 +85,7 @@ class ServerlessPythonRequirements {
       );
     } else if (!options.dockerFile) {
       // If no dockerFile is provided, use default image
-      const defaultImage = `lambci/lambda:build-${
-        this.serverless.service.provider.runtime
-      }`;
+      const defaultImage = `lambci/lambda:build-${this.serverless.service.provider.runtime}`;
       options.dockerImage = options.dockerImage || defaultImage;
     }
     if (options.layer) {
diff --git a/package.json b/package.json
index 4fc4f0de..5cc0fd67 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
     "format": "prettier --write index.js lib/*.js test.js"
   },
   "devDependencies": {
-    "eslint": "*",
+    "eslint": "^5.16.0",
     "prettier": "*",
     "cross-spawn": "*",
     "deasync-promise": "*",