diff --git a/build_tools/llvm_version.txt b/build_tools/llvm_version.txt
index 1cf47e2..db4e4ee 100644
--- a/build_tools/llvm_version.txt
+++ b/build_tools/llvm_version.txt
@@ -1,2 +1,2 @@
-c266c56d545dfecf767b312771f716b394c5d5eb
+b40b3196b32110f00b7610851f4ef182ac751ba0