diff --git a/flake.nix b/flake.nix
index 6bced14..7fb2bd2 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,6 +1,6 @@
 {
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.11";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
 
     pyproject-nix = {
       url = "github:pyproject-nix/pyproject.nix";
diff --git a/src/lego_monitoring/checks/vulnix/__init__.py b/src/lego_monitoring/checks/vulnix/__init__.py
index 302bdc4..b494400 100644
--- a/src/lego_monitoring/checks/vulnix/__init__.py
+++ b/src/lego_monitoring/checks/vulnix/__init__.py
@@ -28,12 +28,17 @@ def vulnix_check() -> list[Alert]:
         if len(non_whitelisted_cves) == 0:
             continue
         message = f"New findings in derivation <code>{finding.derivation}</code>:"
+        short_message = f"New findings in <code>{finding.derivation}</code> (short ver):"
         for cve in non_whitelisted_cves:
             if cve in finding.cvssv3_basescore:
                 score_str = f"(CVSSv3 = {finding.cvssv3_basescore[cve]})"
             else:
                 score_str = "(not scored by CVSSv3)"
             message += f'\n* <a href="https://nvd.nist.gov/vuln/detail/{cve}">{cve}</a> - {finding.description[cve]} {score_str}'
+            short_message += f'\n * <a href="https://nvd.nist.gov/vuln/detail/{cve}">{cve}</a>'
+
+        if len(message) > 3700:
+            message = short_message
 
         alert = Alert(
             alert_type=AlertType.VULN,