diff --git a/open_spiel/python/pybind11/games_dots_and_boxes.cc b/open_spiel/python/pybind11/games_dots_and_boxes.cc
index 103f7d173a..2bf6745910 100644
--- a/open_spiel/python/pybind11/games_dots_and_boxes.cc
+++ b/open_spiel/python/pybind11/games_dots_and_boxes.cc
@@ -22,7 +22,6 @@
 #include "open_spiel/spiel.h"
 #include "pybind11/include/pybind11/smart_holder.h"
 #include "pybind11/include/pybind11/pybind11.h"
-#include "pybind11/include/pybind11/detail/smart_holder_type_casters.h"
 
 
 namespace py = ::pybind11;
diff --git a/open_spiel/python/pybind11/pybind11.h b/open_spiel/python/pybind11/pybind11.h
index accf4ea526..543f0a56c4 100644
--- a/open_spiel/python/pybind11/pybind11.h
+++ b/open_spiel/python/pybind11/pybind11.h
@@ -31,7 +31,6 @@
 #include "pybind11/include/pybind11/cast.h"
 #include "pybind11/include/pybind11/detail/common.h"
 #include "pybind11/include/pybind11/detail/descr.h"
-#include "pybind11/include/pybind11/detail/smart_holder_type_casters.h"
 #include "pybind11/include/pybind11/functional.h"  // IWYU pragma: keep
 #include "pybind11/include/pybind11/numpy.h"  // IWYU pragma: keep
 #include "pybind11/include/pybind11/operators.h"  // IWYU pragma: keep