diff --git a/libs/CMakeLists.txt b/libs/CMakeLists.txt
index 62c20f11f..e221633de 100644
--- a/libs/CMakeLists.txt
+++ b/libs/CMakeLists.txt
@@ -307,6 +307,8 @@ ExternalProject_Add(mgcxx-proj
   GIT_TAG        "origin/regex-queries"
   CMAKE_ARGS
     "-DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>"
+    "-DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}"
+    "-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}"
     "-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}"
     "-DENABLE_TESTS=OFF"
   INSTALL_DIR    "${PROJECT_BINARY_DIR}/mgcxx"