diff --git a/scripts/_common.sh b/scripts/_common.sh
index d08f700..ee841ce 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -5,7 +5,7 @@
 #=================================================
 
 # dependencies used by the app
-pkg_dependencies="python3-dbus python3-yaml python3-dnspython python3-requests-toolbelt python3-spf whois smartmontools"
+pkg_dependencies="python3-dbus python3-crypto python3-yaml python3-dnspython python3-requests-toolbelt python3-spf whois smartmontools"
 
 #=================================================
 # PERSONAL HELPERS