diff --git a/server/CMakeLists.txt b/server/CMakeLists.txt
index 4536b3ff..c2c70999 100644
--- a/server/CMakeLists.txt
+++ b/server/CMakeLists.txt
@@ -37,6 +37,7 @@ if(BUILD_TESTING)
     CXX_STANDARD 20
     CXX_CLANG_TIDY ""
   )
+  target_compile_options(Catch2 PRIVATE -Wno-restrict) # workaround GCC bug
   add_executable(traintastic-server-test test/main.cpp)
   add_dependencies(traintastic-server-test traintastic-lang)
   target_compile_definitions(traintastic-server-test PRIVATE -DTRAINTASTIC_TEST)