diff --git a/include/pybind11/cast.h b/include/pybind11/cast.h
index d0284f1f80..225c54d770 100644
--- a/include/pybind11/cast.h
+++ b/include/pybind11/cast.h
@@ -22,7 +22,6 @@
 #include <iosfwd>
 #include <iterator>
 #include <memory>
-#include <stack>
 #include <string>
 #include <tuple>
 #include <type_traits>