diff --git a/tools/icu/README.md b/tools/icu/README.md
index 2e908e2cf44750..0740b718a859c0 100644
--- a/tools/icu/README.md
+++ b/tools/icu/README.md
@@ -36,4 +36,4 @@ Note:
 * [The ICU Homepage][ICU]
 
 [ICU]: http://icu-project.org
-[ICU data slicer]: https://github.com/unicode-org/icu/blob/master/docs/userguide/icu_data/buildtool.md
+[ICU data slicer]: https://github.com/unicode-org/icu/blob/HEAD/docs/userguide/icu_data/buildtool.md