diff --git a/setup.py b/setup.py
index c98e932..09fbafc 100755
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@
     },
     description="This is submit50, with which you can submit solutions to problems for CS50.",
     long_description="This is submit50, with which you can submit solutions to problems for CS50.",
-    install_requires=["lib50>=3,<4", "requests>=2.19", "setuptools", "termcolor>=1.1"],
+    install_requires=["lib50>=3,<4", "packaging", "requests>=2.19", "setuptools", "termcolor>=1.1"],
     keywords=["submit", "submit50"],
     name="submit50",
     python_requires=">=3.6",