diff --git a/pkgs/tools/misc/tmuxp/default.nix b/pkgs/tools/misc/tmuxp/default.nix
index 08dcc184b3c..91a55694f85 100644
--- a/pkgs/tools/misc/tmuxp/default.nix
+++ b/pkgs/tools/misc/tmuxp/default.nix
@@ -11,6 +11,8 @@ pythonPackages.buildPythonApplication rec {
     sha256 = "05z5ssv9glsqmcy9fdq06bawy1274dnzqsqd3a4z4jd0w6j09smn";
   };
 
+  buildInputs = with pythonPackages; [ pytest ];
+
   propagatedBuildInputs = with pythonPackages; [
     click colorama kaptan libtmux
   ];