diff --git a/install b/install
index d93b6f6..fd2e60e 100755
--- a/install
+++ b/install
@@ -16,6 +16,7 @@ install() {
   sudo pacman -S --needed \
     abook \
     alacritty \
+    expect \
     ffmpeg \
     firefox \
     fzf \
@@ -66,6 +67,8 @@ install() {
       /usr/bin/pam_exec-ssh
       mkdir ~/.ssh/unlock.d
       ln -s ~/.ssh/id_ed25519 ~/.ssh/unlock.d/id_ed25519
+      sudo sed -i '$a auth      optional  pam_exec.so expose_authtok /usr/bin/pam_exec-ssh' \
+        /etc/pam.d/system-local-login
     }
 }