diff --git a/pkgs/tools/networking/ripe-atlas-tools/default.nix b/pkgs/tools/networking/ripe-atlas-tools/default.nix
index 5ca1cd41065d..0c415c65b8ea 100644
--- a/pkgs/tools/networking/ripe-atlas-tools/default.nix
+++ b/pkgs/tools/networking/ripe-atlas-tools/default.nix
@@ -41,7 +41,7 @@ python3.pkgs.buildPythonApplication rec {
   ];
 
   preBuild = ''
-    echo "RIPE Atlas Tools [NixOS ${lib.trivial.version}] ${version}" > ripe/atlas/tools/user-agent
+    echo "RIPE Atlas Tools [NixOS ${version}" > ripe/atlas/tools/user-agent
   '';
 
   postInstall = ''