diff --git a/scripts/install b/scripts/install
index 4de5fcc..99bcd95 100644
--- a/scripts/install
+++ b/scripts/install
@@ -96,9 +96,9 @@ ynh_add_fpm_config --usage=medium --footprint=medium --package="$extra_php_depen
 
 # Set permissions on app files
 chown -R $app:www-data $final_path
-find $final_path -type f -exec chmod 664 {} \;
-find $final_path/bin -type f -exec chmod 775 {} \;
-find $final_path -type d -exec chmod 775 {} \;
+find $final_path -type f -exec chmod 660 {} \;
+find $final_path/bin -type f -exec chmod 770 {} \;
+find $final_path -type d -exec chmod 770 {} \;
 find $final_path -type d -exec chmod +s {} \;
 
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index d41e85a..75cbdf4 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -74,9 +74,9 @@ ynh_system_user_create --username=$app --home_dir=$final_path
 
 # Restore permissions on app files
 chown -R $app:www-data $final_path
-find $final_path -type f -exec chmod 664 {} \;
-find $final_path/bin -type f -exec chmod 775 {} \;
-find $final_path -type d -exec chmod 775 {} \;
+find $final_path -type f -exec chmod 660 {} \;
+find $final_path/bin -type f -exec chmod 770 {} \;
+find $final_path -type d -exec chmod 770 {} \;
 find $final_path -type d -exec chmod +s {} \;
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index ff900c8..a1fc630 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -150,9 +150,9 @@ fi
 
 # Set permissions on app files
 chown -R $app:www-data $final_path
-find $final_path -type f -exec chmod 664 {} \;
-find $final_path/bin -type f -exec chmod 775 {} \;
-find $final_path -type d -exec chmod 775 {} \;
+find $final_path -type f -exec chmod 660 {} \;
+find $final_path/bin -type f -exec chmod 770 {} \;
+find $final_path -type d -exec chmod 770 {} \;
 find $final_path -type d -exec chmod +s {} \;
 
 #=================================================