diff --git a/build_tools/llvm_version.txt b/build_tools/llvm_version.txt
index 9ce0b98..7ae88e8 100644
--- a/build_tools/llvm_version.txt
+++ b/build_tools/llvm_version.txt
@@ -1,2 +1,2 @@
-523775f96742e6f099b3498b6606b7250c0af841
+bb993b1d9de34b8e47511a746bf4422ba206123b