diff --git a/debian/control b/debian/control
index 97f5a1b..da4131e 100644
--- a/debian/control
+++ b/debian/control
@@ -5,7 +5,8 @@
 Build-Depends: debhelper-compat (= 12),
  dh-python,
  python3-all,
- python3-setuptools
+ python3-setuptools,
+ python3-cryptography (>= 2.5)
 Standards-Version: 4.3.0
 Homepage: https://github.com/tgalal/dissononce
 Vcs-Browser: https://salsa.debian.org/debian/python-dissononce