diff --git a/build_tools/llvm_version.txt b/build_tools/llvm_version.txt
index 193373e70..9eec0df48 100644
--- a/build_tools/llvm_version.txt
+++ b/build_tools/llvm_version.txt
@@ -1 +1 @@
-d58b0562a340b043ed83b0fb4375e89ed74fc621
+649466a54f920970e99574d0d982b8ed35465c8f