diff --git a/pkgs/applications/networking/flent/default.nix b/pkgs/applications/networking/flent/default.nix
index 2f97b39da60..bc0a519a0ee 100644
--- a/pkgs/applications/networking/flent/default.nix
+++ b/pkgs/applications/networking/flent/default.nix
@@ -14,6 +14,8 @@ buildPythonApplication rec {
 
   buildInputs = [ sphinx ];
 
+  checkInputs = [ procps ];
+
   propagatedBuildInputs = [
     matplotlib
     procps