diff --git a/setup.py b/setup.py
index c17b79e4e..eef705387 100755
--- a/setup.py
+++ b/setup.py
@@ -34,6 +34,7 @@
         'appdirs>=1,<2',
         'cryptography>=2.2,<3',
         'names>=0,<1',
+        'progressbar2>=3.20,<4',
         'pyasn1>=0,<1',
         'pycryptodome>=3.5,<4',
         'pyopenssl>=19,<20',