diff --git a/src/github.com/matrix-org/go-neb/services/travisci/travisci.go b/src/github.com/matrix-org/go-neb/services/travisci/travisci.go
index 8185794..543b9d6 100644
--- a/src/github.com/matrix-org/go-neb/services/travisci/travisci.go
+++ b/src/github.com/matrix-org/go-neb/services/travisci/travisci.go
@@ -245,6 +245,7 @@ func (s *Service) Register(oldService types.Service, client *matrix.Client) erro
 			}
 		}
 	}
+	s.joinRooms(client)
 	return nil
 }
 
@@ -266,6 +267,18 @@ func (s *Service) PostRegister(oldService types.Service) {
 	}
 }
 
+func (s *Service) joinRooms(client *matrix.Client) {
+	for roomID := range s.Rooms {
+		if _, err := client.JoinRoom(roomID, "", ""); err != nil {
+			log.WithFields(log.Fields{
+				log.ErrorKey: err,
+				"room_id":    roomID,
+				"user_id":    client.UserID,
+			}).Error("Failed to join room")
+		}
+	}
+}
+
 func init() {
 	types.RegisterService(func(serviceID, serviceUserID, webhookEndpointURL string) types.Service {
 		return &Service{