diff --git a/packages/react-dock/package.json b/packages/react-dock/package.json
index a38fb208..ea81465c 100644
--- a/packages/react-dock/package.json
+++ b/packages/react-dock/package.json
@@ -56,6 +56,7 @@
     "react-dom": "^16.14.0",
     "react-hot-loader": "^4.13.0",
     "react-icons": "^4.2.0",
+    "react-is": "^16.13.1",
     "react-test-renderer": "^16.14.0",
     "styled-components": "^5.3.1"
   },
diff --git a/yarn.lock b/yarn.lock
index 42f445ca..faead49b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -24792,6 +24792,7 @@ fsevents@^1.2.7:
     react-dom: ^16.14.0
     react-hot-loader: ^4.13.0
     react-icons: ^4.2.0
+    react-is: ^16.13.1
     react-test-renderer: ^16.14.0
     styled-components: ^5.3.1
   peerDependencies: