diff --git a/shared/server-configuration.nix b/shared/server-configuration.nix
index d66e837..fcc6ace 100644
--- a/shared/server-configuration.nix
+++ b/shared/server-configuration.nix
@@ -104,7 +104,8 @@ in
     # nfs port TODO make dependant on option enabled
     # 2049 - nfs
     # 8384 - syncthing
-    networking.firewall.allowedTCPPorts = [ 80 2049 8384 ];
+    # 5352 - caldav server radicale
+    networking.firewall.allowedTCPPorts = [ 80 2049 5352 8384 ];
 
     users.groups.kage = {
       gid = 105;