diff --git a/package.json b/package.json
index 8c8a704..6524243 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "fantasy-laws": "^2.0.1",
     "jsverify": "^0.8.4",
     "oletus": "^4.0.0",
-    "rollup": "^3.9.1",
+    "rollup": "^4.6.0",
     "sanctuary-maybe": "^2.1.0",
     "sanctuary-scripts": "^5.0.0"
   }