diff --git a/spread/build/ubuntu/task.yaml b/spread/build/ubuntu/task.yaml
index a9f227b3940..14ff6120baa 100644
--- a/spread/build/ubuntu/task.yaml
+++ b/spread/build/ubuntu/task.yaml
@@ -68,7 +68,7 @@ execute: |
 
     # use clang
     if [ "${CLANG}" -eq 1 ]; then
-      apt-get install --yes --no-install-recommends clang
+      apt-get install --yes --no-install-recommends clang libclang-rt-dev
       echo "OVERRIDE_CONFIGURE_OPTIONS += -DCMAKE_C_COMPILER=clang" >> debian/opts.mk
       echo "OVERRIDE_CONFIGURE_OPTIONS += -DCMAKE_CXX_COMPILER=clang++" >> debian/opts.mk
       echo "OVERRIDE_CONFIGURE_OPTIONS += -DCMAKE_CXX_FLAGS=-fpch-validate-input-files-content" >> debian/opts.mk