diff --git a/ci.sh b/ci.sh
index f403d081..05ae3b5e 100755
--- a/ci.sh
+++ b/ci.sh
@@ -101,7 +101,7 @@ function do_llvm() {
         --install-target distribution \
         --projects clang lld \
         --quiet-cmake \
-        --ref release/17.x \
+        --ref release/19.x \
         --shallow-clone \
         --show-build-commands \
         --targets X86 \