diff --git a/gdb/mgodb/bson.go b/gdb/mgodb/types.go
similarity index 79%
rename from gdb/mgodb/bson.go
rename to gdb/mgodb/types.go
index 35cc0d7..0223e57 100644
--- a/gdb/mgodb/bson.go
+++ b/gdb/mgodb/types.go
@@ -10,6 +10,7 @@ package mgodb
 import (
 	"go.mongodb.org/mongo-driver/bson"
 	"go.mongodb.org/mongo-driver/bson/primitive"
+	"go.mongodb.org/mongo-driver/mongo"
 )
 
 // M is an unordered representation of a BSON document.
@@ -25,3 +26,6 @@ type D = bson.D
 type A = bson.A
 
 type ObjectID = primitive.ObjectID
+
+// Collection is a handle to a MongoDB collection. It is safe for concurrent use by multiple goroutines.
+type Collection = mongo.Collection