diff --git a/Makefile b/Makefile
index 94f1d8f..064fada 100644
--- a/Makefile
+++ b/Makefile
@@ -45,6 +45,9 @@ ifeq ($(CONFIG_CXX_ALLOCATOR),true)
     # make sure LTO is compatible in case CC and CXX don't match (such as clang and g++)
     CXX := $(CC)
     ifeq ($(CONFIG_USE_LIBCXX),true)
+        ifeq ($(CXX),clang)
+            CXXFLAGS += -stdlib=libc++
+        endif
         LDLIBS += -lc++
     else
         LDLIBS += -lstdc++