diff --git a/vendor/gopkg.in/jcmturner/rpc.v1/mstypes/group_membership.go b/vendor/gopkg.in/jcmturner/rpc.v1/mstypes/group_membership.go
new file mode 100644
index 0000000..7915137
--- /dev/null
+++ b/vendor/gopkg.in/jcmturner/rpc.v1/mstypes/group_membership.go
@@ -0,0 +1,19 @@
+package mstypes
+
+// GroupMembership implements https://msdn.microsoft.com/en-us/library/cc237945.aspx
+// RelativeID : A 32-bit unsigned integer that contains the RID of a particular group.
+// The possible values for the Attributes flags are identical to those specified in KERB_SID_AND_ATTRIBUTES
+type GroupMembership struct {
+	RelativeID uint32
+	Attributes uint32
+}
+
+// DomainGroupMembership implements https://msdn.microsoft.com/en-us/library/hh536344.aspx
+// DomainId: A SID structure that contains the SID for the domain.This member is used in conjunction with the GroupIds members to create group SIDs for the device.
+// GroupCount: A 32-bit unsigned integer that contains the number of groups within the domain to which the account belongs.
+// GroupIds: A pointer to a list of GROUP_MEMBERSHIP structures that contain the groups to which the account belongs in the domain. The number of groups in this list MUST be equal to GroupCount.
+type DomainGroupMembership struct {
+	DomainID   RPCSID `ndr:"pointer"`
+	GroupCount uint32
+	GroupIDs   []GroupMembership `ndr:"pointer,conformant"` // Size is value of GroupCount
+}