diff --git a/infra/base-images/base-clang/checkout_build_install_llvm.sh b/infra/base-images/base-clang/checkout_build_install_llvm.sh
index 5fe4e3e03..083450e40 100755
--- a/infra/base-images/base-clang/checkout_build_install_llvm.sh
+++ b/infra/base-images/base-clang/checkout_build_install_llvm.sh
@@ -26,7 +26,7 @@ cd $SRC/chromium_tools
 git clone https://chromium.googlesource.com/chromium/src/tools/clang
 cd clang
 
-OUR_LLVM_REVISION=315377  # For manual bumping.
+OUR_LLVM_REVISION=320259  # For manual bumping.
 LLVM_REVISION=$(grep -Po "CLANG_REVISION = '\K\d+(?=')" scripts/update.py)
 
 if [ $OUR_LLVM_REVISION -gt $LLVM_REVISION ]; then