diff --git a/build_tools/llvm_version.txt b/build_tools/llvm_version.txt
index aa558345d..dc5be0ca5 100644
--- a/build_tools/llvm_version.txt
+++ b/build_tools/llvm_version.txt
@@ -1 +1 @@
-429c88d37f1f02e68ebc1fc7b0da4511ce6407e3
+b9f8a9b43c2e6bb010ea8e457ab318077f013e25