diff --git a/build_tools/llvm_version.txt b/build_tools/llvm_version.txt
index b2601218..36441b82 100644
--- a/build_tools/llvm_version.txt
+++ b/build_tools/llvm_version.txt
@@ -1 +1 @@
-d954d9758a4f6021c2ff6edb1365e511398ae58d
+a2426eb603afaf6c04ddd14921b474d2caffa12b