diff --git a/src/main/java/com/evolveum/polygon/connector/msgraphapi/GroupProcessing.java b/src/main/java/com/evolveum/polygon/connector/msgraphapi/GroupProcessing.java
index 28d11ff..7dd148b 100644
--- a/src/main/java/com/evolveum/polygon/connector/msgraphapi/GroupProcessing.java
+++ b/src/main/java/com/evolveum/polygon/connector/msgraphapi/GroupProcessing.java
@@ -22,6 +22,7 @@ public class GroupProcessing extends ObjectProcessing {
 
     private final static String GROUPS = "/groups";
     private final static String USERS = "/users";
+    private final static String ROLE_ASSIGNMENT = "/roleManagement/directory/roleAssignments";
 
     private static final String ATTR_ALLOWEXTERNALSENDERS = "allowExternalSenders";
     private static final String ATTR_AUTOSUBSCRIBENEWMEMBERS = "autoSubscribeNewMembers";
@@ -47,10 +48,13 @@ public class GroupProcessing extends ObjectProcessing {
     private static final String ATTR_ISASSIGNABLETOROLE = "isAssignableToRole";
     private static final String ATTR_MEMBERS = "members";
     private static final String ATTR_OWNERS = "owners";
+    private static final String ATTR_MEMBER_OF_ROLE = "memberOfRole";
+
 
     protected static final Set<String> EXCLUDE_ATTRS_OF_GROUP = Stream.of(
             ATTR_MEMBERS,
-            ATTR_OWNERS
+            ATTR_OWNERS,
+            ATTR_MEMBER_OF_ROLE
     ).collect(Collectors.toSet());
 
     protected static final Set<String> UPDATABLE_MULTIPLE_VALUE_ATTRS_OF_GROUP = Stream.of(
@@ -192,6 +196,12 @@ protected ObjectClassInfo objectClassInfo() {
         attrOwners.setType(String.class).setCreateable(true).setUpdateable(true).setReadable(true).setMultiValued(true).setReturnedByDefault(false);
         groupObjClassBuilder.addAttributeInfo(attrOwners.build());
 
+        AttributeInfoBuilder attrRoleMembers = new AttributeInfoBuilder(ATTR_MEMBER_OF_ROLE);
+        attrRoleMembers.setRequired(false).setType(String.class).setMultiValued(true)
+                .setCreateable(false).setUpdateable(false).setReadable(true)
+                .setReturnedByDefault(false);
+        groupObjClassBuilder.addAttributeInfo(attrRoleMembers.build());
+
         return groupObjClassBuilder.build();
     }
 
@@ -589,6 +599,24 @@ private JSONObject saturateGroupOwnership(JSONObject group) {
         return group;
     }
 
+    /**
+     * Query a group's roles, add them to the group's JSON attributes (multivalue)
+     *
+     * @param group Group to query for (JSON object resulting from previous API call)
+     * @return Original JSON, enriched with roles information
+     */
+    private JSONObject saturateGroupRoleMembership(JSONObject group) {
+        final GraphEndpoint endpoint = getGraphEndpoint();
+        final String uid = group.getString(ATTR_ID);
+
+        LOG.info("[GET] - saturateRoleMembership(), for group with UID: {0}", uid);
+
+        final String customQuery = "$expand=roleDefinition&$select=roleDefinitionId&$filter=principalId eq '" + uid + "'";
+        final JSONArray groupMembership = endpoint.executeListRequest(ROLE_ASSIGNMENT, customQuery, null, true);
+        group.put(ATTR_MEMBER_OF_ROLE, getJSONArray(groupMembership, "roleDefinitionId"));
+        return group;
+    }
+
     /**
      * Adds group accounts to the group JSON Object. Decides upon members or owners based on @param isMembers.
      * @param group Original group object to extend with owners or members account ids
@@ -628,10 +656,15 @@ protected boolean handleJSONObject(OperationOptions options, JSONObject group, R
             group = saturateGroupOwnership(group);
         }
 
+        if (shouldSaturate(options, ObjectClass.GROUP_NAME, ATTR_MEMBER_OF_ROLE)) {
+            group = saturateGroupRoleMembership(group);
+        }
+
         ConnectorObjectBuilder builder = convertGroupJSONObjectToConnectorObject(group);
 
         incompleteIfNecessary(options, ObjectClass.GROUP_NAME, ATTR_MEMBERS, builder);
         incompleteIfNecessary(options, ObjectClass.GROUP_NAME, ATTR_OWNERS, builder);
+        incompleteIfNecessary(options, ObjectClass.GROUP_NAME, ATTR_MEMBER_OF_ROLE, builder);
 
         final ConnectorObject connectorObject = builder.build();
         LOG.ok("handleJSONObject, group: {0}, \n\tconnectorObject: {1}", group.get("id"), connectorObject);
@@ -671,6 +704,7 @@ private ConnectorObjectBuilder convertGroupJSONObjectToConnectorObject(JSONObjec
 
         getMultiIfExists(group, ATTR_MEMBERS, builder);
         getMultiIfExists(group, ATTR_OWNERS, builder);
+        getMultiIfExists(group, ATTR_MEMBER_OF_ROLE, builder);
 
         return builder;
     }
diff --git a/src/test/java/com/evolveum/polygon/connector/msgraphapi/common/ObjectConstants.java b/src/test/java/com/evolveum/polygon/connector/msgraphapi/common/ObjectConstants.java
index ad0575a..ccce124 100644
--- a/src/test/java/com/evolveum/polygon/connector/msgraphapi/common/ObjectConstants.java
+++ b/src/test/java/com/evolveum/polygon/connector/msgraphapi/common/ObjectConstants.java
@@ -114,6 +114,7 @@ public interface ObjectConstants {
     String ATTR_UNSEENCOUNT = "unseenCount";
     String ATTR_VISIBILITY = "visibility";
     String ATTR_OWNERS = "owners";
+    String ATTR_MEMBER_OF_ROLE = "memberOfRole";
     
     // Role
     
@@ -128,5 +129,4 @@ public interface ObjectConstants {
     String ATTR_INHERIT_PERMISSIONS_FROM_ODATA_CONTEXT = "inheritsPermissionsFrom@odata.context";
     String ATTR_INHERIT_PERMISSIONS_FROM = "inheritsPermissionsFrom";
     String ATTR_INHERIT_PERMISSIONS_FROM_ALL = ATTR_INHERIT_PERMISSIONS_FROM + "." + ATTR_ID;
-
 }
diff --git a/src/test/java/com/evolveum/polygon/connector/msgraphapi/integration/GroupPerformanceTests.java b/src/test/java/com/evolveum/polygon/connector/msgraphapi/integration/GroupPerformanceTests.java
index 9fd3477..1b546f4 100644
--- a/src/test/java/com/evolveum/polygon/connector/msgraphapi/integration/GroupPerformanceTests.java
+++ b/src/test/java/com/evolveum/polygon/connector/msgraphapi/integration/GroupPerformanceTests.java
@@ -379,4 +379,39 @@ public void CreateSecurityGroupTest() {
         connector.delete(objectClassGroup, groupUid, options);
         connector.dispose();
     }
+
+    @Test(priority = 31)
+    public void GetGroupRoleMembershipTest() {
+        MSGraphConnector connector = new MSGraphConnector();
+        MSGraphConfiguration conf = getConfiguration();
+
+        Map<String, Object> operationOptions = new HashMap<>();
+        operationOptions.put("ALLOW_PARTIAL_ATTRIBUTE_VALUES", false);
+        operationOptions.put(OperationOptions.OP_ATTRIBUTES_TO_GET, new String[]{ ATTR_MEMBER_OF_ROLE });
+        operationOptions.put(OperationOptions.OP_PAGED_RESULTS_OFFSET, 1);
+        operationOptions.put(OperationOptions.OP_PAGE_SIZE, 100);
+        OperationOptions options = new OperationOptions(operationOptions);
+
+        final ArrayList<ConnectorObject> resultsGroup = new ArrayList<>();
+        SearchResultsHandler handlerGroup = new SearchResultsHandler() {
+
+            @Override
+            public boolean handle(ConnectorObject connectorObject) {
+                resultsGroup.add(connectorObject);
+                return true;
+            }
+
+            @Override
+            public void handleResult(SearchResult result) {
+            }
+        };
+        connector.init(conf);
+        connector.executeQuery(ObjectClass.GROUP, null, handlerGroup, options);
+
+        msGraphConnector.dispose();
+
+        if (resultsGroup.size() < 100) {
+            throw new InvalidAttributeValueException("Non exist 100 groups.");
+        }
+    }
 }