diff --git a/package.json b/package.json
index 7ded20e000..3a868df3e1 100644
--- a/package.json
+++ b/package.json
@@ -78,7 +78,7 @@
     "json-loader": "^0.5.7",
     "lint-staged": "^3.3.1",
     "mocha": "^2.5.3",
-    "prettier": "^1.7.2",
+    "prettier": "^1.8.2",
     "react": "^15.5.0",
     "react-addons-test-utils": "^15.3.2",
     "react-codemirror2": "^2.0.2",
diff --git a/playground/app.js b/playground/app.js
index af7e54a552..e7fd1ccc82 100644
--- a/playground/app.js
+++ b/playground/app.js
@@ -460,13 +460,16 @@ class App extends Component {
               formData={formData}
               onChange={this.onFormDataChange}
               onSubmit={({ formData }) =>
-                console.log("submitted formData", formData)}
+                console.log("submitted formData", formData)
+              }
               fields={{ geo: GeoPosition }}
               validate={validate}
               onBlur={(id, value) =>
-                console.log(`Touched ${id} with value ${value}`)}
+                console.log(`Touched ${id} with value ${value}`)
+              }
               onFocus={(id, value) =>
-                console.log(`Focused ${id} with value ${value}`)}
+                console.log(`Focused ${id} with value ${value}`)
+              }
               transformErrors={transformErrors}
               onError={log("errors")}>
               <div className="row">
diff --git a/test/performance_test.js b/test/performance_test.js
index 64e36b5dd4..db482f4acc 100644
--- a/test/performance_test.js
+++ b/test/performance_test.js
@@ -60,14 +60,13 @@ describe("Rendering performance optimizations", () => {
         formData: { const: "0", var: "0" },
       });
 
-      const fields = scryRenderedComponentsWithType(
-        comp,
-        SchemaField
-      ).reduce((fields, fieldComp) => {
-        sandbox.stub(fieldComp, "render").returns(<div />);
-        fields[fieldComp.props.idSchema.$id] = fieldComp;
-        return fields;
-      });
+      const fields = scryRenderedComponentsWithType(comp, SchemaField).reduce(
+        (fields, fieldComp) => {
+          sandbox.stub(fieldComp, "render").returns(<div />);
+          fields[fieldComp.props.idSchema.$id] = fieldComp;
+          return fields;
+        }
+      );
 
       setProps(comp, { schema, formData: { const: "0", var: "1" } });
 
@@ -86,14 +85,13 @@ describe("Rendering performance optimizations", () => {
         formData: ["const", "var0"],
       });
 
-      const fields = scryRenderedComponentsWithType(
-        comp,
-        SchemaField
-      ).reduce((fields, fieldComp) => {
-        sandbox.stub(fieldComp, "render").returns(<div />);
-        fields[fieldComp.props.idSchema.$id] = fieldComp;
-        return fields;
-      });
+      const fields = scryRenderedComponentsWithType(comp, SchemaField).reduce(
+        (fields, fieldComp) => {
+          sandbox.stub(fieldComp, "render").returns(<div />);
+          fields[fieldComp.props.idSchema.$id] = fieldComp;
+          return fields;
+        }
+      );
 
       setProps(comp, { schema, formData: ["const", "var1"] });