diff --git a/include/boost/python.hpp b/include/boost/python.hpp
index ae49abaf..1b1ffb65 100644
--- a/include/boost/python.hpp
+++ b/include/boost/python.hpp
@@ -61,6 +61,7 @@
 # include <boost/python/return_value_policy.hpp>
 # include <boost/python/scope.hpp>
 # include <boost/python/self.hpp>
+# include <boost/python/slice.hpp>
 # include <boost/python/slice_nil.hpp>
 # include <boost/python/str.hpp>
 # include <boost/python/to_python_converter.hpp>