diff --git a/PREUPLOAD.cfg b/PREUPLOAD.cfg
index 9123959..a77791f 100644
--- a/PREUPLOAD.cfg
+++ b/PREUPLOAD.cfg
@@ -1,2 +1,4 @@
 [Hook Scripts]
 checkstyle_hook = ${REPO_ROOT}/prebuilts/checkstyle/checkstyle.py --config_xml tools/checkstyle.xml --sha ${PREUPLOAD_COMMIT}
+
+ktfmt_hook = ${REPO_ROOT}/external/ktfmt/ktfmt.py --check ${PREUPLOAD_FILES}
\ No newline at end of file