diff --git a/package-lock.json b/package-lock.json
index fe61fad..f625e3a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3296,9 +3296,9 @@
       }
     },
     "google-closure-library": {
-      "version": "20180204.0.0",
-      "resolved": "https://registry.npmjs.org/google-closure-library/-/google-closure-library-20180204.0.0.tgz",
-      "integrity": "sha1-rTxaGN/XMcYUnFIg0pkcDJEpcYo=",
+      "version": "20200315.0.0",
+      "resolved": "https://registry.npmjs.org/google-closure-library/-/google-closure-library-20200315.0.0.tgz",
+      "integrity": "sha512-LdCecdztxDvA9K+8b6E9aE4Hw7ABdYokfA7d5qW1sd/iy8O1l0+eXLlddE2JtW62gf8UjcPskBua4fU4J5lmHA==",
       "dev": true
     },
     "graceful-fs": {
diff --git a/package.json b/package.json
index 4c7fd2b..7d5cdbf 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "gh-pages": "0.12.0",
     "glob": "7.1.2",
     "google-closure-compiler": "20180402.0.0",
-    "google-closure-library": "20180204.0.0",
+    "google-closure-library": "20200315.0.0",
     "graceful-fs": "4.1.11",
     "json": "9.0.4",
     "rimraf": "2.6.2",