diff --git a/python/core.cpp b/python/core.cpp
index dd8cc124d..497aa3a9e 100644
--- a/python/core.cpp
+++ b/python/core.cpp
@@ -1,4 +1,6 @@
 #include <pybind11/pybind11.h>
+#include <pybind11/stl.h>
+#include <pybind11/eigen.h>
 
 #include <avogadro/core/cube.h>
 #include <avogadro/core/gaussiansettools.h>
diff --git a/python/io.cpp b/python/io.cpp
index 59dafa846..50b94a922 100644
--- a/python/io.cpp
+++ b/python/io.cpp
@@ -1,4 +1,5 @@
 #include <pybind11/pybind11.h>
+#include <pybind11/stl.h>
 
 #include <avogadro/core/molecule.h>
 #include <avogadro/io/fileformatmanager.h>