diff --git a/build-llvm.py b/build-llvm.py
index 3f245e61..954085e3 100755
--- a/build-llvm.py
+++ b/build-llvm.py
@@ -14,10 +14,10 @@
 from tc_build.tools import HostTools, StageTools
 
 # This is a known good revision of LLVM for building the kernel
-GOOD_REVISION = 'e280e406c2e34ce29e1e71da7cd3a284ea112ce8'
+GOOD_REVISION = '0f8615f4dc568f4d7cbf73580eef3e78f64f3bd0'
 
 # The version of the Linux kernel that the script downloads if necessary
-DEFAULT_KERNEL_FOR_PGO = (6, 5, 0)
+DEFAULT_KERNEL_FOR_PGO = (6, 6, 0)
 
 parser = ArgumentParser(formatter_class=RawTextHelpFormatter)
 clone_options = parser.add_mutually_exclusive_group()