diff --git a/pyproject.toml b/pyproject.toml
index a7d3022..a1cd2fe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,6 +39,7 @@ develop = [
     "pytest",
     "pytest-cov",
     "pytest-console-scripts",
+    "responses"
 ]
 
 [project.urls]