diff --git a/build-llvm.py b/build-llvm.py
index fb6948f1..9202ee42 100755
--- a/build-llvm.py
+++ b/build-llvm.py
@@ -14,7 +14,7 @@
 from tc_build.tools import HostTools, StageTools
 
 # This is a known good revision of LLVM for building the kernel
-GOOD_REVISION = '2e39b57837aa1790b3ee078fa532bb1748a609c7'
+GOOD_REVISION = '15397583e3d85eb1f1a051de26eb409aaedd3b54'
 
 # The version of the Linux kernel that the script downloads if necessary
 DEFAULT_KERNEL_FOR_PGO = (6, 9, 0)