diff --git a/pkgs/tools/security/onlykey-agent/default.nix b/pkgs/tools/security/onlykey-agent/default.nix
index c88e1d2b064d..36a1cb284759 100644
--- a/pkgs/tools/security/onlykey-agent/default.nix
+++ b/pkgs/tools/security/onlykey-agent/default.nix
@@ -52,7 +52,7 @@ python3Packages.buildPythonApplication rec {
     sha256 = "sha256-SbGb7CjcD7cFPvASZtip56B4uxRiFKZBvbsf6sb8fds=";
   };
 
-  propagatedBuildInputs = with python3Packages; [ lib-agent onlykey-cli ];
+  propagatedBuildInputs = with python3Packages; [ lib-agent onlykey-cli setuptools ];
 
   # move the python library into the sitePackages.
   postInstall = ''