diff --git a/build-llvm.py b/build-llvm.py
index 3e79b06b..fb6948f1 100755
--- a/build-llvm.py
+++ b/build-llvm.py
@@ -17,7 +17,7 @@
 GOOD_REVISION = '2e39b57837aa1790b3ee078fa532bb1748a609c7'
 
 # The version of the Linux kernel that the script downloads if necessary
-DEFAULT_KERNEL_FOR_PGO = (6, 8, 0)
+DEFAULT_KERNEL_FOR_PGO = (6, 9, 0)
 
 parser = ArgumentParser(formatter_class=RawTextHelpFormatter)
 clone_options = parser.add_mutually_exclusive_group()