diff --git a/setup.py b/setup.py
index bc5c2c4a..e4da0143 100644
--- a/setup.py
+++ b/setup.py
@@ -32,7 +32,8 @@ def get_version(rel_path):
         "requests",
         "astropy",
         "tensorboard",
-        "mypy",
+        "mypy"
+        "frank>=1.2.1",
     ],
     "docs": [
         "sphinx>=2.3.0",