diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 9f760474ae18..9b706aa15434 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1530,6 +1530,8 @@ in {
     inherit (pkgs.dlib) name src nativeBuildInputs meta;
 
     buildInputs = pkgs.dlib.buildInputs ++ [ self.boost ];
+
+    checkInputs = with self; [ pytest ];
   };
 
   datadog = buildPythonPackage rec {