diff --git a/nix/modules/server.nix b/nix/modules/server.nix
index c9f2404a..49b681c4 100644
--- a/nix/modules/server.nix
+++ b/nix/modules/server.nix
@@ -111,6 +111,7 @@ with lib; let
         scope = "profile";
         authorize-url = null;
         token-url = null;
+        logout-url = "";
         user-url = null;
         sign-key = "";
         sig-algo = "RS256";
@@ -424,6 +425,11 @@ in {
                     default = defaults.openid.provider.token-url;
                     description = "The URL used to retrieve the token.";
                   };
+                  logout-url = mkOption {
+                    type = types.str;
+                    default = defaults.openid.provider.logout-url;
+                    description = "The URL used for user's logout.";
+                  };
                   user-url = mkOption {
                     type = types.nullOr types.str;
                     default = defaults.openid.provider.user-url;