diff --git a/nixos/tests/all-tests.nix b/nixos/tests/all-tests.nix
index f6392be29437..a51cd1b31ec2 100644
--- a/nixos/tests/all-tests.nix
+++ b/nixos/tests/all-tests.nix
@@ -342,7 +342,8 @@ in {
   fluentd = handleTest ./fluentd.nix {};
   fluidd = handleTest ./fluidd.nix {};
   fontconfig-default-fonts = handleTest ./fontconfig-default-fonts.nix {};
-  forgejo = handleTest ./forgejo.nix { };
+  forgejo = handleTest ./forgejo.nix { forgejoPackage = pkgs.forgejo; };
+  forgejo-lts = handleTest ./forgejo.nix { forgejoPackage = pkgs.forgejo-lts; };
   freenet = handleTest ./freenet.nix {};
   freeswitch = handleTest ./freeswitch.nix {};
   freetube = discoverTests (import ./freetube.nix);
diff --git a/nixos/tests/forgejo.nix b/nixos/tests/forgejo.nix
index c5bf8e32524c..d2315b7f013e 100644
--- a/nixos/tests/forgejo.nix
+++ b/nixos/tests/forgejo.nix
@@ -1,6 +1,7 @@
 { system ? builtins.currentSystem
 , config ? { }
 , pkgs ? import ../.. { inherit system config; }
+, forgejoPackage ? pkgs.forgejo
 }:
 
 with import ../lib/testing-python.nix { inherit system pkgs; };
@@ -53,6 +54,7 @@ let
         virtualisation.memorySize = 2047;
         services.forgejo = {
           enable = true;
+          package = forgejoPackage;
           database = { inherit type; };
           settings.service.DISABLE_REGISTRATION = true;
           settings."repository.signing".SIGNING_KEY = signingPrivateKeyId;
@@ -145,7 +147,7 @@ let
         assert "BEGIN PGP PUBLIC KEY BLOCK" in server.succeed("curl http://localhost:3000/api/v1/signing-key.gpg")
 
         api_version = json.loads(server.succeed("curl http://localhost:3000/api/forgejo/v1/version")).get("version")
-        assert "development" != api_version and "${pkgs.forgejo.version}+gitea-" in api_version, (
+        assert "development" != api_version and "${forgejoPackage.version}+gitea-" in api_version, (
             "/api/forgejo/v1/version should not return 'development' "
             + f"but should contain a forgejo+gitea compatibility version string. Got '{api_version}' instead."
         )
diff --git a/pkgs/by-name/fo/forgejo/generic.nix b/pkgs/by-name/fo/forgejo/generic.nix
index c8e2fbf68aa7..4f6d7769249f 100644
--- a/pkgs/by-name/fo/forgejo/generic.nix
+++ b/pkgs/by-name/fo/forgejo/generic.nix
@@ -153,7 +153,7 @@ buildGoModule rec {
         -exec brotli --best --keep --no-copy-stat {} ';'
     '';
 
-    tests = nixosTests.forgejo;
+    tests = if lts then nixosTests.forgejo-lts else nixosTests.forgejo;
     updateScript = nix-update-script { };
   };