diff --git a/types/theo/package.json b/types/theo/package.json
index 12231bb461..6c119dd781 100644
--- a/types/theo/package.json
+++ b/types/theo/package.json
@@ -1,6 +1,6 @@
 {
     "private": true,
     "dependencies": {
-        "immutable": "^3.8.2"
+        "immutable": "4.0.0-rc.12"
     }
 }