diff --git a/doc/api/util.markdown b/doc/api/util.markdown
index 96940dac56..b9196395ea 100644
--- a/doc/api/util.markdown
+++ b/doc/api/util.markdown
@@ -1,6 +1,6 @@
 # util
 
-    Stability: 5 - Locked
+    Stability: 4 - API Frozen
 
 These functions are in the module `'util'`. Use `require('util')` to
 access them.