diff --git a/.config/gnupg/gpg-agent.conf b/.config/gnupg/gpg-agent.conf
index 049b40e..149edaa 100644
--- a/.config/gnupg/gpg-agent.conf
+++ b/.config/gnupg/gpg-agent.conf
@@ -1 +1,5 @@
+# Enter password in tty
 pinentry-program /usr/bin/pinentry-curses
+
+# Expire cache entries the latest after 30min (default: 2h)
+max-cache-ttl 1800