diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 6d7e26bf..855b47e9 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -11,14 +11,14 @@ jobs:
     - name: Update package database
       run: sudo apt -y update
     - name: Install deps
-      run: sudo apt -y install git make gcc-10 g++-10 ccache cmake libyaml-cpp-dev clang-12 libclang-12-dev libclang-cpp12-dev lcov zlib1g-dev
+      run: sudo apt -y install git make gcc-10 g++-10 ccache cmake libyaml-cpp-dev llvm-12 clang-12 libclang-12-dev libclang-cpp12-dev lcov zlib1g-dev
     - name: Select g++ version
       run: |
         sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 10
         sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-10 10
     - name: Build and unit test
       run: |
-        NUMPROC=2 CMAKE_CXX_FLAGS="--coverage -fno-inline" CMAKE_EXE_LINKER_FLAGS="-lgcov --coverage" make test
+        NUMPROC=2 CMAKE_CXX_FLAGS="--coverage -fno-inline" CMAKE_EXE_LINKER_FLAGS="-lgcov --coverage" LLVM_VERSION=12 make test
     - name: Run coverage
       run: |
         lcov -c -d debug -o coverage.info
diff --git a/src/cx/util.h b/src/cx/util.h
index 42751e94..3b0af753 100644
--- a/src/cx/util.h
+++ b/src/cx/util.h
@@ -19,9 +19,6 @@
 
 #include "common/model/namespace.h"
 
-#include <clang-c/CXCompilationDatabase.h>
-#include <clang-c/Index.h>
-
 #include <class_diagram/model/template_parameter.h>
 #include <string>