diff --git a/build_tools/llvm_version.txt b/build_tools/llvm_version.txt
index cb94d6d4a..f12cc87a1 100644
--- a/build_tools/llvm_version.txt
+++ b/build_tools/llvm_version.txt
@@ -1 +1 @@
-f06563a5c0d239a6b98f74db522681613254ad08
+3191587666aa3d1e53966bc8876614c7197fac4f