diff --git a/Modules/_bsddb.c b/Modules/_bsddb.c
index c0a5f0f..9438d97 100644
--- a/Modules/_bsddb.c
+++ b/Modules/_bsddb.c
@@ -4518,7 +4518,10 @@
     ADD_INT(d, ENOENT);
     ADD_INT(d, EPERM);
 
-
+#if (DBVER >= 40)
+    ADD_INT(d, DB_SET_LOCK_TIMEOUT);
+    ADD_INT(d, DB_SET_TXN_TIMEOUT);
+#endif
 
     /* The base exception class is DBError */
     DBError = PyErr_NewException("bsddb._db.DBError", NULL, NULL);