diff --git a/scripts/_common.sh b/scripts/_common.sh
index 8a15aaa..e8fd2a4 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -5,7 +5,8 @@
 #=================================================
 
 # dependencies used by the app
-pkg_dependencies="nomad"
+pkg_dependencies=""
+extra_pkg_dependencies="nomad"
 
 server_pkg_dependencies=""
 
diff --git a/scripts/install b/scripts/install
index 27645a0..e071819 100644
--- a/scripts/install
+++ b/scripts/install
@@ -100,7 +100,7 @@ ynh_script_progression --message="Installing dependencies..."
 
 if [ "$node_type" == "server" ]
 then
-	ynh_install_app_dependencies $server_pkg_dependencies
+	pkg_dependencies="$pkg_dependencies $server_pkg_dependencies"
 fi
 
 if [ "$node_type" == "client" ]
@@ -110,9 +110,10 @@ then
 		client_pkg_dependencies="$client_pkg_dependencies $client_lxc_pkg_dependencies"
 		ynh_exec_warn_less ynh_install_go --go_version=$go_version
 	fi	
-	ynh_install_app_dependencies $client_pkg_dependencies
+	pkg_dependencies="$pkg_dependencies $client_pkg_dependencies"
 fi
-ynh_install_extra_app_dependencies --repo="deb https://apt.releases.hashicorp.com $(lsb_release -cs) main" --package="$pkg_dependencies" --key="https://apt.releases.hashicorp.com/gpg"
+ynh_install_app_dependencies $pkg_dependencies
+ynh_install_extra_app_dependencies --repo="deb https://apt.releases.hashicorp.com $(lsb_release -cs) main" --package="$extra_pkg_dependencies" --key="https://apt.releases.hashicorp.com/gpg"
 
 #=================================================
 # CREATE DEDICATED USER
diff --git a/scripts/restore b/scripts/restore
index 7ecc196..cdc1c18 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -74,7 +74,7 @@ ynh_script_progression --message="Reinstalling dependencies..."
 
 if [ "$node_type" == "server" ]
 then
-	ynh_install_app_dependencies $server_pkg_dependencies
+	pkg_dependencies="$pkg_dependencies $server_pkg_dependencies"
 fi
 
 if [ "$node_type" == "client" ]
@@ -83,9 +83,10 @@ then
 	then
 		client_pkg_dependencies="$client_pkg_dependencies $client_lxc_pkg_dependencies"
 	fi	
-	ynh_install_app_dependencies $client_pkg_dependencies
+	pkg_dependencies="$pkg_dependencies $client_pkg_dependencies"
 fi
-ynh_install_extra_app_dependencies --repo="deb https://apt.releases.hashicorp.com $(lsb_release -cs) main" --package="$pkg_dependencies" --key="https://apt.releases.hashicorp.com/gpg"
+ynh_install_app_dependencies $pkg_dependencies
+ynh_install_extra_app_dependencies --repo="deb https://apt.releases.hashicorp.com $(lsb_release -cs) main" --package="$extra_pkg_dependencies" --key="https://apt.releases.hashicorp.com/gpg"
 
 #=================================================
 # RESTORE THE NGINX CONFIGURATION
diff --git a/scripts/upgrade b/scripts/upgrade
index c48777c..853cc02 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -88,7 +88,7 @@ ynh_script_progression --message="Upgrading dependencies..."
 
 if [ "$node_type" == "server" ]
 then
-	ynh_install_app_dependencies $server_pkg_dependencies
+	pkg_dependencies="$pkg_dependencies $server_pkg_dependencies"
 fi
 
 if [ "$node_type" == "client" ]
@@ -98,9 +98,10 @@ then
 		client_pkg_dependencies="$client_pkg_dependencies $client_lxc_pkg_dependencies"
 		ynh_exec_warn_less ynh_install_go --go_version=$go_version
 	fi	
-	ynh_install_app_dependencies $client_pkg_dependencies
+	pkg_dependencies="$pkg_dependencies $client_pkg_dependencies"
 fi
-ynh_install_extra_app_dependencies --repo="deb https://apt.releases.hashicorp.com $(lsb_release -cs) main" --package="$pkg_dependencies" --key="https://apt.releases.hashicorp.com/gpg"
+ynh_install_app_dependencies $pkg_dependencies
+ynh_install_extra_app_dependencies --repo="deb https://apt.releases.hashicorp.com $(lsb_release -cs) main" --package="$extra_pkg_dependencies" --key="https://apt.releases.hashicorp.com/gpg"
 
 #=================================================
 # NGINX CONFIGURATION