diff --git a/.clang_format.hook b/.clang_format.hook
index 8141fffb389b60331a9b93427fd1c73858c47d35..4cbc972bbd200d0dcb6d8ba404bb1286ee81736c 100755
--- a/.clang_format.hook
+++ b/.clang_format.hook
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -e
 
-readonly VERSION="3.6"
+readonly VERSION="3.9"
 
 version=$(clang-format -version)