--- third_party/upb/BUILD
+++ third_party/upb/BUILD
@@ -45,7 +45,7 @@
 
 config_setting(
     name = "windows",
-    constraint_values = ["@bazel_tools//platforms:windows"],
+    constraint_values = ["@platforms//os:windows"],
 )
 
 upb_fasttable_enabled(