diff --git a/psutil/_psutil_openbsd.c b/psutil/_psutil_openbsd.c
index 9ab531c0b..d39e1f9e3 100644
--- a/psutil/_psutil_openbsd.c
+++ b/psutil/_psutil_openbsd.c
@@ -1986,6 +1986,7 @@ void init_psutil_bsd(void)
 #else
     PyObject *module = Py_InitModule("_psutil_bsd", PsutilMethods);
 #endif
+    PyModule_AddIntConstant(module, "version", PSUTIL_VERSION);
     // process status constants
     PyModule_AddIntConstant(module, "SSTOP", SSTOP);
     PyModule_AddIntConstant(module, "SSLEEP", SSLEEP);
diff --git a/setup.py b/setup.py
index d83e1e9b6..d91e390bb 100644
--- a/setup.py
+++ b/setup.py
@@ -126,6 +126,7 @@ def get_winver():
             'psutil/_psutil_common.c',
             'psutil/arch/bsd/process_info_openbsd.c'
         ],
+        define_macros=[VERSION_MACRO],
         libraries=["kvm"]),
         posix_extension,
     ]