diff --git a/plugins/modules/ec2_transit_gateway_info.py b/plugins/modules/ec2_transit_gateway_info.py
index b25346b84b8..014c875b6a0 100644
--- a/plugins/modules/ec2_transit_gateway_info.py
+++ b/plugins/modules/ec2_transit_gateway_info.py
@@ -119,6 +119,13 @@
                     returned: always
                     type: str
                     sample: "enable"
+                 multicast_support:
+                    description:
+                      - Indicates whether Multicast support is enabled.
+                    returned: always
+                    type: str
+                    sample: "enable"
+                    version_added: 7.3.0
                  propagation_default_route_table_id:
                     description:
                       - The ID of the default propagation route table.