diff --git a/.gitlab-ci/Dockerfile b/.gitlab-ci/Dockerfile
index 8b4978eefb..20eb281fd4 100644
--- a/.gitlab-ci/Dockerfile
+++ b/.gitlab-ci/Dockerfile
@@ -50,6 +50,7 @@ RUN dnf -y install \
     python3-wheel \
     redhat-rpm-config \
     rest-devel \
+    sassc \
     vulkan-devel \
     wayland-devel \
     wayland-protocols-devel \
diff --git a/.gitlab-ci/test-msys2-meson.sh b/.gitlab-ci/test-msys2-meson.sh
index 2759c0b417..415e793f39 100644
--- a/.gitlab-ci/test-msys2-meson.sh
+++ b/.gitlab-ci/test-msys2-meson.sh
@@ -28,7 +28,8 @@ pacman --noconfirm -S --needed \
     mingw-w64-$MSYS2_ARCH-shared-mime-info \
     mingw-w64-$MSYS2_ARCH-meson \
     mingw-w64-$MSYS2_ARCH-ninja \
-    mingw-w64-$MSYS2_ARCH-gtk-doc
+    mingw-w64-$MSYS2_ARCH-gtk-doc \
+    mingw-w64-$MSYS2_ARCH-sassc
 
 mkdir -p _ccache
 export CCACHE_BASEDIR="$(pwd)"