diff --git a/gojson/encode_test.go b/gojson/encode_test.go
index 6e9aa2e..e3f35c6 100644
--- a/gojson/encode_test.go
+++ b/gojson/encode_test.go
@@ -1274,7 +1274,7 @@ func TestMarshalSafeCollections(t *testing.T) {
 	}
 
 	for i, tt := range tests {
-		b, err := MarshalSafeCollections(tt.in, true, true)
+		b, err := MarshalSafeCollections(tt.in, true, true, nil)
 		if err != nil {
 			t.Errorf("test %d, unexpected failure: %v", i, err)
 		}
diff --git a/mongoext/registry.go b/mongoext/registry.go
index f11aa34..9a5ebaf 100644
--- a/mongoext/registry.go
+++ b/mongoext/registry.go
@@ -11,7 +11,10 @@ func CreateGoExtBsonRegistry() *bsoncodec.Registry {
 	rb := bsoncodec.NewRegistryBuilder()
 
 	rb.RegisterTypeDecoder(reflect.TypeOf(rfctime.RFC3339Time{}), rfctime.RFC3339Time{})
+	rb.RegisterTypeDecoder(reflect.TypeOf(&rfctime.RFC3339Time{}), rfctime.RFC3339Time{})
+
 	rb.RegisterTypeDecoder(reflect.TypeOf(rfctime.RFC3339NanoTime{}), rfctime.RFC3339NanoTime{})
+	rb.RegisterTypeDecoder(reflect.TypeOf(&rfctime.RFC3339NanoTime{}), rfctime.RFC3339NanoTime{})
 
 	bsoncodec.DefaultValueEncoders{}.RegisterDefaultEncoders(rb)
 	bsoncodec.DefaultValueDecoders{}.RegisterDefaultDecoders(rb)