diff --git a/styleguidist/package.json b/styleguidist/package.json
index ac76c8f7..f900c8f9 100644
--- a/styleguidist/package.json
+++ b/styleguidist/package.json
@@ -14,7 +14,7 @@
     "date-fns": "1.3.0",
     "dog-names": "~1.0.2",
     "file-loader": "^0.9.0",
-    "immutable": "3.8.1",
+    "immutable": "4.3.8",
     "lodash.get": "4.3.0",
     "lodash.map": "4.4.0",
     "material-ui": "0.16.2",