diff --git a/MongoDBLink.m b/MongoDBLink.m
index ba39804..030c21a 100644
--- a/MongoDBLink.m
+++ b/MongoDBLink.m
@@ -275,11 +275,17 @@
 serialize[{}] := JavaNew["com.mongodb.BasicDBObject"]
 
 serialize[_, x : $rulepattern] := Block[
-  {newdbobj = JavaNew["com.mongodb.BasicDBObject"]}, 
+  {newdbobj = JavaNew["com.mongodb.BasicDBObject"]},
   Map[serialize[newdbobj, #] &, x];
   newdbobj
 ]
 
+serialize[_, x : { $rulepattern }] := Block[
+  {newdblist = JavaNew["com.mongodb.BasicDBList"]},
+  MapIndexed[newdblist@put[First[#2] - 1, serialize[#]]&, x];
+  newdblist
+]
+
 (* $in, $nin, ... *)
 serialize[dbobj_, Rule["_id", {a_ -> b_}]] := 
   dbobj@put["_id", serialize[dbobj, {a -> (ObjectId /@ b)}]]
diff --git a/PacletInfo.m b/PacletInfo.m
index 69a0036..637d24e 100644
--- a/PacletInfo.m
+++ b/PacletInfo.m
@@ -4,7 +4,7 @@
 
 Paclet[
   Name -> "MongoDBLink",
-  Version -> "0.1.1",
+  Version -> "0.1.2",
   MathematicaVersion -> "6+",
   Extensions -> 
     {
diff --git a/Tests.wlt b/Tests.wlt
index db07077..edaa8f9 100644
--- a/Tests.wlt
+++ b/Tests.wlt
@@ -370,6 +370,14 @@ VerificationTest[
 	TestID->"ebd27ef8-953f-433f-9f13-976c2f07ec6c"
 ]
 
+VerificationTest[
+	MongoDBLink`Private`serialize[{"a" -> 1, "b" -> {{"b1" -> 1}}}]@toString[]
+	,
+	"{ \"a\" : 1 , \"b\" : [ { \"b1\" : 1}]}"
+	,
+	TestID->"aa43675c-c925-4450-b221-8cb964194447"
+]
+
 EndTestSection[]
 
 VerificationTest[