diff --git a/README.md b/README.md
index ac343cf..246e5ff 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ If you don't have YunoHost, please consult [the guide](https://yunohost.org/#/in
 
 Open source support ticket system
 
-**Shipped version:** 1.15.3.1~ynh1
+**Shipped version:** 1.15.4~ynh1
 
 **Demo:** http://www.ostickethacks.com/demo/demo_info.php
 
diff --git a/README_fr.md b/README_fr.md
index e4bfa1c..76856df 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -13,7 +13,7 @@ Si vous n'avez pas YunoHost, regardez [ici](https://yunohost.org/#/install) pour
 
 Système de ticket de support open source
 
-**Version incluse :** 1.15.3.1~ynh1
+**Version incluse :** 1.15.4~ynh1
 
 **Démo :** http://www.ostickethacks.com/demo/demo_info.php
 
diff --git a/check_process b/check_process
index 420ec16..5b95bbf 100644
--- a/check_process
+++ b/check_process
@@ -24,6 +24,8 @@
 		upgrade=1	from_commit=20349f58ebb98ce87d3a80da18f11a7bafa04985
 		# 1.15.2~ynh2
 		upgrade=1	from_commit=55e224ea95f384ab8db46941366b0205cd8d3032
+		# 1.15.3.1~ynh1
+		upgrade=1	from_commit=049b860396347599e0633adf277549146644e460
 		backup_restore=1
 		multi_instance=1
 		port_already_use=0
@@ -42,3 +44,5 @@ Notification=none
 		name=1.15.2~ynh1
 	; commit=55e224ea95f384ab8db46941366b0205cd8d3032
 		name=1.15.2~ynh2
+	; commit=049b860396347599e0633adf277549146644e460
+		name=1.15.3.1~ynh1
diff --git a/conf/app.src b/conf/app.src
index 9b7a870..36d568b 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://github.com/osTicket/osTicket/releases/download/v1.15.3.1/osTicket-v1.15.3.1.zip
-SOURCE_SUM=5417aaaa617980ed4e653fcfc1d4330951720841a64a28e8ada922e233a244ce
+SOURCE_URL=https://github.com/osTicket/osTicket/releases/download/v1.15.4/osTicket-v1.15.4.zip
+SOURCE_SUM=6c7cf5fe74258dd0beac6176c438468f468a0a3f07f1f6a0349cc68a9e514302
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=zip
 SOURCE_IN_SUBDIR=true
diff --git a/manifest.json b/manifest.json
index d4859a3..4c9e0e9 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Open source support ticket system",
         "fr": "Système de ticket de support open source"
     },
-    "version": "1.15.3.1~ynh1",
+    "version": "1.15.4~ynh1",
     "url": "https://osticket.com",
     "upstream": {
         "license": "GPL-2.0-or-later",
diff --git a/scripts/install b/scripts/install
index f5af1a6..1445326 100644
--- a/scripts/install
+++ b/scripts/install
@@ -148,7 +148,7 @@ chown $app:www-data "$final_path/include/ost-config.php"
 ynh_script_progression --message="Building plugins..."
 
 mkdir -p "$final_path/include/plugins/build/.config/composer"
-COMPOSER_HOME="$final_path/include/plugins/build/.config/composer"
+export COMPOSER_HOME="$final_path/include/plugins/build/.config/composer"
 
 pushd "$final_path/include/plugins/build"
 	php${phpversion} make.php hydrate