diff --git a/package.json b/package.json
index 253f7525d..2d1bb11ff 100644
--- a/package.json
+++ b/package.json
@@ -27,11 +27,11 @@
     ]
   },
   "devDependencies": {
-    "babel-core": "^6.14.0",
+    "babel-core": "^6.18.0",
     "babel-jest": "^14.1.0",
-    "babel-plugin-transform-es2015-block-scoping": "^6.14.0",
-    "babel-preset-es2015": "^6.14.0",
-    "babel-traverse": "^6.14.0",
+    "babel-plugin-transform-es2015-block-scoping": "^6.18.0",
+    "babel-preset-es2015": "^6.18.0",
+    "babel-traverse": "^6.16.0",
     "bytes": "^2.1.0",
     "chalk": "^1.1.3",
     "cli-table": "^0.3.1",
diff --git a/packages/babel-plugin-minify-mangle-names/__tests__/mangle-names-test.js b/packages/babel-plugin-minify-mangle-names/__tests__/mangle-names-test.js
index 285dae6ff..9f2a382bb 100644
--- a/packages/babel-plugin-minify-mangle-names/__tests__/mangle-names-test.js
+++ b/packages/babel-plugin-minify-mangle-names/__tests__/mangle-names-test.js
@@ -177,7 +177,7 @@ describe("mangle-names", () => {
   });
 
   // https://phabricator.babeljs.io/T6957
-  xit("labels should not shadow bindings", () => {
+  it("labels should not shadow bindings", () => {
     const source = unpad(`
       function foo() {
         var meh;
@@ -201,6 +201,28 @@ describe("mangle-names", () => {
     expect(transform(source)).toBe(expected);
   });
 
+  it("labels should not shadow bindings 2", () => {
+    const source = unpad(`
+      function f(a) {
+        try {
+          a: {
+            console.log(a);
+          }
+        } catch ($a) { }
+      }
+    `);
+    const expected = unpad(`
+      function f(b) {
+        try {
+          a: {
+            console.log(b);
+          }
+        } catch (c) {}
+      }
+    `);
+    expect(transform(source)).toBe(expected);
+  });
+
   it("should be order independent", () => {
     const source = unpad(`
       function foo() {