diff --git a/package.json b/package.json
index 5272c8a..fd1ee36 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
     "debug": "^2.2.0",
     "domify": "^1.4.1",
     "extend": "^3.0.2",
-    "is": "^3.1.0",
+    "is": "^3.3.0",
     "load-iframe": "^1.0.0",
     "next-tick": "^0.2.2",
     "slug-component": "^1.1.0",
diff --git a/yarn.lock b/yarn.lock
index 3b5dc42..ae07d64 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2281,6 +2281,11 @@ is@^3.0.1, is@^3.1.0:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/is/-/is-3.2.1.tgz#d0ac2ad55eb7b0bec926a5266f6c662aaa83dca5"
 
+is@^3.3.0:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/is/-/is-3.3.0.tgz#61cff6dd3c4193db94a3d62582072b44e5645d79"
+  integrity sha512-nW24QBoPcFGGHJGUwnfpI7Yc5CdqWNdsyHQszVE/z2pKHXzh7FZ5GWhJqSyaQ9wMkQnsTx+kAI8bHlCX4tKdbg==
+
 isarray@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"