diff --git a/scripts/_common.sh b/scripts/_common.sh
index beef539..2a3b1f5 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -3,6 +3,8 @@
 # Common variables
 #
 
+pkg_dependencies="php5-gd"
+
 # ============= FUTURE YUNOHOST HELPERS =============
 
 # Create a dedicated fail2ban config (jail and filter conf files)
diff --git a/scripts/install b/scripts/install
index e9147cc..f78b839 100644
--- a/scripts/install
+++ b/scripts/install
@@ -63,6 +63,10 @@ ynh_app_setting_set $app language "$language"
 #=================================================
 # STANDARD MODIFICATIONS
 #=================================================
+# INSTALL DEPENDENCIES
+#=================================================
+
+ynh_install_app_dependencies "$pkg_dependencies"
 
 #=================================================
 # CREATE A MYSQL DB
diff --git a/scripts/remove b/scripts/remove
index 0a3954f..b9cb134 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -22,6 +22,11 @@ domain=$(ynh_app_setting_get "$app" domain)
 #=================================================
 # STANDARD REMOVE
 #=================================================
+# REMOVE DEPENDENCIES
+#=================================================
+
+# Remove metapackage and its dependencies
+ynh_remove_app_dependencies
 
 #=================================================
 # REMOVE THE MYSQL DB
diff --git a/scripts/upgrade b/scripts/upgrade
index 3e72842..5617f48 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -94,6 +94,12 @@ if [ -f "/etc/yunohost/apps/$app/scripts/backup" ] ; then
   ynh_abort_if_errors	# Stop script if an error is detected
 fi
 
+#=================================================
+# INSTALL DEPENDENCIES
+#=================================================
+
+ynh_install_app_dependencies "$pkg_dependencies"
+
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================