diff --git a/pkgs/by-name/ex/expliot/package.nix b/pkgs/by-name/ex/expliot/package.nix
index a6efef50a9e3..e897c9853502 100644
--- a/pkgs/by-name/ex/expliot/package.nix
+++ b/pkgs/by-name/ex/expliot/package.nix
@@ -21,6 +21,7 @@ buildPythonApplication (finalAttrs: {
   ];
 
   pythonRelaxDeps = [
+    "cmd2"
     "cryptography"
     "paho-mqtt"
     "pynetdicom"