diff --git a/build_tools/llvm_version.txt b/build_tools/llvm_version.txt
index bf30f68..5c938ad 100644
--- a/build_tools/llvm_version.txt
+++ b/build_tools/llvm_version.txt
@@ -1,2 +1,2 @@
-3cb8347c94a0d8ae1295fa4ae686443f49bc18e8
+b45b5166f8f91e601ebd7bc73bb6800155c4c9bc