diff --git a/.env.sample b/.env.sample
index 4cffa95..5f449fb 100644
--- a/.env.sample
+++ b/.env.sample
@@ -68,6 +68,14 @@ ENCRYPTED_BY_DEFAULT=all
 # Set these to keyservers you trust - usually the same as your federation allowlist
 #TRUSTED_KEYSERVERS="trusted_key_servers:\n  - server_name: 'example.com'\n  - server_name: 'example2.com'"
 
+# some optional configs to increase privacy and security
+#REQUIRE_AUTH_FOR_PROFILE_REQUESTS=true
+#LIMIT_PROFILE_REQUESTS_TO_USERS_WHO_SHARE_ROOMS=true
+#DELETE_STALE_DEVICES_AFTER=1y
+#SESSION_LIFETIME=60d
+#TRACK_PUPPETED_USER_IPS=true
+
+
 ## Retention
 
 ALLOWED_LIFETIME_MAX=4w
@@ -126,6 +134,13 @@ RETENTION_MAX_LIFETIME=4w
 #SMTP_USER=
 #SECRET_SMTP_PASSWORD_VERSION=v1
 
+## USER-DIRECTORY
+
+#USER_DIRECTORY_ENABLED=true
+#USER_DIRECTORY_SEARCH_ALL_USERS=true
+#USER_DIRECTORY_PREFER_LOCAL_USERS=true
+#USER_DIRECTORY_SHOW_LOCKED_USERS=false
+
 ## App services
 
 #APP_SERVICES_ENABLED=1
diff --git a/abra.sh b/abra.sh
index f7e3a93..76f9495 100644
--- a/abra.sh
+++ b/abra.sh
@@ -1,6 +1,6 @@
 export DISCORD_BRIDGE_YAML_VERSION=v2
 export ENTRYPOINT_CONF_VERSION=v3
-export HOMESERVER_YAML_VERSION=v30
+export HOMESERVER_YAML_VERSION=v31
 export LOG_CONFIG_VERSION=v2
 export SHARED_SECRET_AUTH_VERSION=v2
 export SIGNAL_BRIDGE_YAML_VERSION=v6
diff --git a/compose.yml b/compose.yml
index 0ddd2ac..abd6e89 100644
--- a/compose.yml
+++ b/compose.yml
@@ -55,7 +55,16 @@ services:
       - ENABLE_REGISTRATION
       - REGISTRATION_REQUIRES_TOKEN
       - ENCRYPTED_BY_DEFAULT
+      - USER_DIRECTORY_ENABLED=${USER_DIRECTORY_ENABLED:-true}
+      - USER_DIRECTORY_SEARCH_ALL_USERS=${USER_DIRECTORY_SEARCH_ALL_USERS:-true}
+      - USER_DIRECTORY_PREFER_LOCAL_USERS=${USER_DIRECTORY_PREFER_LOCAL_USERS:-true}
+      - USER_DIRECTORY_SHOW_LOCKED_USERS=${USER_DIRECTORY_SHOW_LOCKED_USERS:-false}
       - FEDERATION_ALLOWLIST
+      - REQUIRE_AUTH_FOR_PROFILE_REQUESTS=${REQUIRE_AUTH_FOR_PROFILE_REQUESTS:-false}
+      - LIMIT_PROFILE_REQUESTS_TO_USERS_WHO_SHARE_ROOMS=${LIMIT_PROFILE_REQUESTS_TO_USERS_WHO_SHARE_ROOMS:-false}
+      - DELETE_STALE_DEVICES_AFTER
+      - SESSION_LIFETIME
+      - TRACK_PUPPETED_USER_IPS=${TRACK_PUPPETED_USER_IPS:-false}
       - LETSENCRYPT_HOST=${DOMAIN}
       - MEDIA_RETENTION_LOCAL_LIFETIME
       - MEDIA_RETENTION_REMOTE_LIFETIME
diff --git a/homeserver.yaml.tmpl b/homeserver.yaml.tmpl
index 9e40d9f..c020f79 100644
--- a/homeserver.yaml.tmpl
+++ b/homeserver.yaml.tmpl
@@ -16,6 +16,12 @@ server_name: {{ or (env "SERVER_NAME") (env "DOMAIN") }}
 # https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#public_baseurl
 public_baseurl: https://{{ env "DOMAIN" }}/
 
+# https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html#require_auth_for_profile_requests
+require_auth_for_profile_requests: {{ env "REQUIRE_AUTH_FOR_PROFILE_REQUESTS" }}
+
+# https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html#limit_profile_requests_to_users_who_share_rooms
+limit_profile_requests_to_users_who_share_rooms: {{ env "LIMIT_PROFILE_REQUESTS_TO_USERS_WHO_SHARE_ROOMS" }}
+
 # https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#serve_server_wellknown
 serve_server_wellknown: {{ env "SERVE_SERVER_WELLKNOWN" }}
 
@@ -52,6 +58,11 @@ listeners:
       {{ end }}
     {{ end }}
 
+# https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html#delete_stale_devices_after
+{{ if (env "DELETE_STALE_DEVICES_AFTER") }}
+delete_stale_devices_after: {{ env "DELETE_STALE_DEVICES_AFTER" }}
+{{ end }}
+
 # https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#admin_contact
 admin_contact: 'mailto:{{ env "ADMIN_EMAIL" }}'
 
@@ -132,6 +143,7 @@ turn_allow_guests: {{ env "TURN_ALLOW_GUESTS" }}
 # https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#enable_registration
 enable_registration: {{ env "ENABLE_REGISTRATION" }}
 
+# https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html#registration_requires_token
 registration_requires_token: {{ env "REGISTRATION_REQUIRES_TOKEN" }}
 
 # https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#enable_3pid_lookup
@@ -149,9 +161,17 @@ auto_join_rooms:
   - "{{ env "AUTO_JOIN_ROOM" }}"
 {{ end }}
 
+# https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html#session_lifetime
+{{ if (env "SESSION_LIFETIME") }}
+session_lifetime: {{ env "SESSION_LIFETIME" }}
+{{ end }}
+
 # https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#report_stats
 report_stats: false
 
+# https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html#track_puppeted_user_ips
+track_puppeted_user_ips: {{ env "TRACK_PUPPETED_USER_IPS" }}
+
 {{ if eq (env "APP_SERVICES_ENABLED") "1" }}
 # https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#app_service_config_files
 app_service_config_files: {{ env "APP_SERVICE_CONFIGS" }}
@@ -248,9 +268,10 @@ encryption_enabled_by_default_for_room_type: {{ env "ENCRYPTED_BY_DEFAULT" }}
 
 # https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#user_directory
 user_directory:
-  enabled: true
-  search_all_users: true
-  prefer_local_users: true
+  enabled: {{ env "USER_DIRECTORY_ENABLED" }}
+  search_all_users: {{ env "USER_DIRECTORY_SEARCH_ALL_USERS" }}
+  prefer_local_users: {{ env "USER_DIRECTORY_PREFER_LOCAL_USERS" }}
+  show_locked_users: {{ env "USER_DIRECTORY_SHOW_LOCKED_USERS" }}
 
 # https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#media_retention
 media_retention: