diff --git a/lib/unsupported-features/node-builtins-modules/util.js b/lib/unsupported-features/node-builtins-modules/util.js
index 40932688..222b522a 100644
--- a/lib/unsupported-features/node-builtins-modules/util.js
+++ b/lib/unsupported-features/node-builtins-modules/util.js
@@ -88,7 +88,7 @@ const util = {
     deprecate: { [READ]: { supported: ["0.8.0"] } },
     format: { [READ]: { supported: ["0.5.3"] } },
     formatWithOptions: { [READ]: { supported: ["10.0.0"] } },
-    getCallSite: { [READ]: { supported: ["22.9.0"] } },
+    getCallSite: { [READ]: { experimental: ["22.9.0"] } },
     getSystemErrorName: { [READ]: { supported: ["9.7.0", "8.12.0"] } },
     getSystemErrorMap: { [READ]: { supported: ["16.0.0", "14.17.0"] } },
     inherits: { [READ]: { supported: ["0.3.0"] } },