diff --git a/pipelines/main/platforms/build_linux.yml b/pipelines/main/platforms/build_linux.yml
index 6e4765d31..e43eb1289 100644
--- a/pipelines/main/platforms/build_linux.yml
+++ b/pipelines/main/platforms/build_linux.yml
@@ -32,3 +32,4 @@ steps:
           # Receive some environment mappings from our templating engine
           TRIPLET: "${TRIPLET?}"
           MAKE_FLAGS: "${MAKE_FLAGS?}"
+          ROOTFS_IMAGE_NAME: "${ROOTFS_IMAGE_NAME?}"
diff --git a/utilities/build_julia.sh b/utilities/build_julia.sh
index e01f42645..87585ab73 100755
--- a/utilities/build_julia.sh
+++ b/utilities/build_julia.sh
@@ -19,6 +19,11 @@ ld -v
 echo
 buildkite-agent --version
 
+if [[ "${ROOTFS_IMAGE_NAME-}" == "llvm_passes" ]]; then
+    echo "--- Update CMake"
+    contrib/download_cmake.sh
+fi
+
 echo "--- Collect make options"
 # These are the flags we'll provide to `make`
 MFLAGS=()