diff --git a/alr-bin/postinstall.sh b/alr-bin/postinstall.sh
index d2aedc3..8872975 100644
--- a/alr-bin/postinstall.sh
+++ b/alr-bin/postinstall.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-useradd -m -s /bin/bash alr
+useradd -r -s /usr/sbin/nologin alr
 mkdir -p /var/cache/alr /etc/alr
-chown alr:alr /var/cache/alr
+chown -R alr:alr /var/cache/alr
 setcap cap_setuid,cap_setgid+ep /usr/bin/alr
diff --git a/alr-git/postinstall.sh b/alr-git/postinstall.sh
index d2aedc3..8872975 100644
--- a/alr-git/postinstall.sh
+++ b/alr-git/postinstall.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-useradd -m -s /bin/bash alr
+useradd -r -s /usr/sbin/nologin alr
 mkdir -p /var/cache/alr /etc/alr
-chown alr:alr /var/cache/alr
+chown -R alr:alr /var/cache/alr
 setcap cap_setuid,cap_setgid+ep /usr/bin/alr