diff --git a/webserver/docker_matrix/templates/docker-compose.yml b/webserver/docker_matrix/templates/docker-compose.yml
index d8392105790d6ad5cd97b9ea2fa43e2479950877..c763fd6e30491b1458087ecc732dae82aa76bd95 100644
--- a/webserver/docker_matrix/templates/docker-compose.yml
+++ b/webserver/docker_matrix/templates/docker-compose.yml
@@ -24,7 +24,7 @@ services:
 
   synapse:
 
-    image: matrixdotorg/synapse:v1.83.0
+    image: matrixdotorg/synapse:v1.98.0
     restart: always
     cpu_count: "1"
     cpuset: "0"
diff --git a/webserver/docker_matrix/templates/synapse-data/homeserver.yaml b/webserver/docker_matrix/templates/synapse-data/homeserver.yaml
index 09065200132ef7869a53eb9eeb3d79d7f3eca6e8..93813866e74f62ffc18298e85b73cf81e0581264 100644
--- a/webserver/docker_matrix/templates/synapse-data/homeserver.yaml
+++ b/webserver/docker_matrix/templates/synapse-data/homeserver.yaml
@@ -4,6 +4,7 @@ public_baseurl: "{{ matrix.public_url }}/"
 use_presence: false
 allow_public_rooms_without_auth: false
 allow_public_rooms_over_federation: true
+forget_rooms_on_leave: true
 
 listeners:
   - port: 8448