diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 864c033..2ea6a46 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -55,6 +55,15 @@ address-sanitizer:
     - make -j$(nproc)
     - broadwayd & CTEST_OUTPUT_ON_FAILURE=1 LSAN_OPTIONS=detect_leaks=0 make test
 
+undefined-sanitizer:
+  image: cppit/jucipp:arch
+  stage: test
+  script:
+    - mkdir build && cd build
+    - CXXFLAGS="-fsanitize=undefined" cmake -DBUILD_TESTING=1 ..
+    - make -j$(nproc)
+    - broadwayd & CTEST_OUTPUT_ON_FAILURE=1 make test
+
 check-format:
   image: cppit/jucipp:arch
   stage: lint
diff --git a/tests/stubs/project.cpp b/tests/stubs/project.cpp
index 243a31f..42079da 100644
--- a/tests/stubs/project.cpp
+++ b/tests/stubs/project.cpp
@@ -3,3 +3,19 @@
 std::shared_ptr<Project::Base> Project::current;
 
 std::shared_ptr<Project::Base> Project::create() { return nullptr; }
+
+std::pair<std::string, std::string> Project::Base::get_run_arguments() {
+  return std::make_pair<std::string, std::string>("", "");
+}
+
+void Project::Base::compile() {}
+
+void Project::Base::compile_and_run() {}
+
+void Project::Base::recreate_build() {}
+
+std::pair<std::string, std::string> Project::Base::debug_get_run_arguments() {
+  return std::make_pair<std::string, std::string>("", "");
+}
+
+void Project::Base::debug_start() {}