diff --git a/configuration.nix b/configuration.nix
index f9b8bb5..e7d746b 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -287,6 +287,12 @@
           name = "Headscale";
           redirectURIs = [ "https://headscale.samsehu.perli.casa/oidc/callback" ];
         }
+        {
+          id = "nextcloud";
+          secretEnv = "insecure_secret";
+          name = "Nextcloud";
+          redirectURIs = [ "https://nextcloud.samsehu.perli.casa/apps/oidc_login/oidc" ];
+        }
       ];
 
       # authentication sources
@@ -427,6 +433,41 @@
     ];
     caching.apcu = true;
 
+    # OIDC configuration
+    extraOptions = {
+        allow_user_to_change_display_name = false;
+        lost_password_link = "disabled";
+        oidc_login_provider_url = "https://dex.samsehu.perli.casa";
+        oidc_login_client_id = "nextcloud";
+        oidc_login_client_secret = "insecure_secret";
+        oidc_login_auto_redirect = false;
+        oidc_login_end_session_redirect = false;
+        oidc_login_button_text = "Log in with Dex";
+        oidc_login_hide_password_form = false;
+        oidc_login_use_id_token = true;
+        config.oidc_login_attributes = {
+          "id" = "preferred_username";
+          "name" = "name";
+          "mail" = "mail";
+          "groups" = "groups";
+        };
+        oidc_login_default_group = "oidc";
+        oidc_login_use_external_storage = true;
+        oidc_login_scope = "openid profile email groups";
+        oidc_login_proxy_ldap = false;
+        oidc_login_disable_registration = true;
+        oidc_login_redir_fallback = false;
+        oidc_login_alt_login_page = "assets/login.php";
+        oidc_login_tls_verify = true;
+        oidc_create_groups = false;
+        oidc_login_webdav_enabled = false;
+        oidc_login_password_authentication = false;
+        oidc_login_public_key_caching_time = 86400;
+        oidc_login_min_time_between_jwks_requests = 10;
+        oidc_login_well_known_caching_time = 86400;
+        oidc_login_update_avatar = false;
+    };
+
     # Auto update apps
     autoUpdateApps.enable = true;