diff --git a/gulpfile.js b/gulpfile.js
index aee799e8b..f4959161e 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -369,7 +369,6 @@ gulp.task('typings', function (cb) {
   const srcs = [
     'typings/parts/blockly-header.d.ts',
     'typings/parts/blockly-interfaces.d.ts',
-    'typings/parts/goog-closure.d.ts',
     `${tmpDir}/core/**`,
     `${tmpDir}/core/components/**`,
     `${tmpDir}/core/components/tree/**`,
diff --git a/typings/blockly.d.ts b/typings/blockly.d.ts
index 2043e6fd2..a8136d568 100644
--- a/typings/blockly.d.ts
+++ b/typings/blockly.d.ts
@@ -79,13 +79,13 @@ declare module Blockly {
     viewWidth: number;
   }
 
-}
-
-declare namespace goog {
-  function require(name: string): void;
-  function provide(name: string): void;
-  function inherits(child: any, parent: any): void;
-  function isFunction(f: any): boolean;
+  /**
+   * Set the Blockly locale.
+   * Note: this method is only available in the npm release of Blockly.
+   * @param {!Object} msg An object of Blockly message strings in the desired
+   *     language.
+   */
+  function setLocale(msg: {[key: string]: string;}): void;
 }
 
 
diff --git a/typings/parts/blockly-interfaces.d.ts b/typings/parts/blockly-interfaces.d.ts
index 5241054c8..a7a7879bb 100644
--- a/typings/parts/blockly-interfaces.d.ts
+++ b/typings/parts/blockly-interfaces.d.ts
@@ -56,4 +56,11 @@ declare module Blockly {
     viewWidth: number;
   }
 
+  /**
+   * Set the Blockly locale.
+   * Note: this method is only available in the npm release of Blockly.
+   * @param {!Object} msg An object of Blockly message strings in the desired
+   *     language.
+   */
+  function setLocale(msg: {[key: string]: string;}): void;
 }
diff --git a/typings/parts/goog-closure.d.ts b/typings/parts/goog-closure.d.ts
deleted file mode 100644
index 367be8352..000000000
--- a/typings/parts/goog-closure.d.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-declare namespace goog {
-  function require(name: string): void;
-  function provide(name: string): void;
-  function inherits(child: any, parent: any): void;
-  function isFunction(f: any): boolean;
-}