diff --git a/package-lock.json b/package-lock.json
index e7fe7c8f5..c4fcf8273 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1626,9 +1626,9 @@
       }
     },
     "classnames": {
-      "version": "2.2.5",
-      "resolved": "https://registry.npmjs.org/classnames/-/classnames-2.2.5.tgz",
-      "integrity": "sha1-+zgB1FNGdknvNgPH1hoCvRKb3m0="
+      "version": "2.2.6",
+      "resolved": "https://registry.npmjs.org/classnames/-/classnames-2.2.6.tgz",
+      "integrity": "sha512-JR/iSQOSt+LQIWwrwEzJ9uk0xfN3mTVYMwt1Ir5mUcSN6pU+V4zQFFaJsclJbPuAUQH+yfWef6tm7l1quW3C8Q=="
     },
     "cli-boxes": {
       "version": "1.0.0",
diff --git a/package.json b/package.json
index 3a8c3dede..1f8cf8fb0 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "babel-preset-env": "^1.1.8",
     "babel-preset-react": "^6.24.1",
     "body-parser": "^1.14.2",
-    "classnames": "^2.2.0",
+    "classnames": "^2.2.6",
     "codemirror": "^5.22.0",
     "cookie-parser": "^1.4.3",
     "create-react-class": "^15.6.3",