diff --git a/debian/gitlab-ci.yml b/debian/gitlab-ci.yml
index 23dbc11cbe0b74408c6daae83a37e41757cbf7df..3b47f568953206c63e282209fdebd816434929c4 100644
--- a/debian/gitlab-ci.yml
+++ b/debian/gitlab-ci.yml
@@ -50,6 +50,11 @@ build:devel:
         - |
             set -eux
 
+            apt-get -y --no-install-recommends install \
+            clang \
+            clang-tools \
+            ${NULL+}
+
             git clone \
             -b${STEAM_RUNTIME_TOOLS_GIT_BRANCH} \
             ${STEAM_RUNTIME_TOOLS_GIT_REPO} \
@@ -60,6 +65,16 @@ build:devel:
             ninja -C _build install
             meson test --verbose -C _build
 
+            export CC=clang
+            export CXX=clang++
+
+            rm -fr _build
+            meson --werror _build
+            ninja -C _build
+            ninja -C _build scan-build
+            ninja -C _build install
+            meson test --verbose -C _build
+
 build:scout:
     stage: build
     image: "${SCOUT_DOCKER_REGISTRY}/${SCOUT_DOCKER_IMAGE}"