diff --git a/third_party/cctz b/third_party/cctz
index 5b5c77df4..4f2578218 160000
--- a/third_party/cctz
+++ b/third_party/cctz
@@ -1 +1 @@
-Subproject commit 5b5c77df48fdffb60e492a159d03a05203d820e2
+Subproject commit 4f2578218c598f075a19245be842e69a1865a929