diff --git a/README.md b/README.md
index 4d293b1..110916e 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ If you don't have YunoHost, please consult [the guide](https://yunohost.org/#/in
 ## Overview
 Open source constituent relationship management (CRM) for non-profits, NGOs and advocacy organizations.
 
-**Shipped version:** 5.26.1 on Drupal 7
+**Shipped version:** 5.30.1 on Drupal 7
 
 ## Screenshots
 
diff --git a/README_fr.md b/README_fr.md
index 19a9c37..509bbe4 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -11,7 +11,7 @@ Si vous n'avez pas YunoHost, consultez [le guide](https://yunohost.org/#/install
 ## Vue d'ensemble
 Gestion des relations avec les constituants (GRC/CRM) pour les organisations à but non lucratif, les ONG et les organisations de défense des droits.
 
-**Version incluse:** 5.26.1 et Drupal 7
+**Version incluse:** 5.30.1 et Drupal 7
 
 ## Captures d'écran
 
diff --git a/conf/civicrm-drupal.src b/conf/civicrm-drupal.src
index 4b39651..c0ed4c5 100644
--- a/conf/civicrm-drupal.src
+++ b/conf/civicrm-drupal.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://storage.googleapis.com/civicrm/civicrm-stable/5.26.1/civicrm-5.26.1-drupal.tar.gz
-SOURCE_SUM=7b02566bfcf885d04c8428ab4da381881dd3846eedf8535e746d5855df1b7425
+SOURCE_URL=https://storage.googleapis.com/civicrm/civicrm-stable/5.30.1/civicrm-5.30.1-drupal.tar.gz
+SOURCE_SUM=47b7c90c7e941e7b1c56c599026bb7d8c6b4582e31bb28324b5fff243eeb4be5
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=tar.gz
 SOURCE_IN_SUBDIR=true
diff --git a/conf/civicrm-l10n.src b/conf/civicrm-l10n.src
index 2206a0e..2ba4023 100644
--- a/conf/civicrm-l10n.src
+++ b/conf/civicrm-l10n.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://storage.googleapis.com/civicrm/civicrm-stable/5.26.1/civicrm-5.26.1-l10n.tar.gz
-SOURCE_SUM=f1a5b3224989a919d8f60e7b842ebf49551cf6ef880475ae2c0cbb24f0397706
+SOURCE_URL=https://storage.googleapis.com/civicrm/civicrm-stable/5.30.1/civicrm-5.30.1-l10n.tar.gz
+SOURCE_SUM=130758ce8e611f18a055e4882c79b8fb092c99f1de9ac7da9e40bd5b2137824e
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=tar.gz
 SOURCE_IN_SUBDIR=true
diff --git a/manifest.json b/manifest.json
index c2d5db6..8962bf0 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "CRM for non-profits, NGOs and advocacy organizations.",
         "fr": "CRM pour organisations à but non lucratif et ONG."
     },
-    "version": "5.26.1-7.0~ynh1",
+    "version": "5.30.1-7.0~ynh1",
     "url": "https://civicrm.org",
     "license": "AGPL-3.0-or-later",
     "maintainer": {
diff --git a/scripts/install b/scripts/install
index 6d0a97d..5de9ace 100644
--- a/scripts/install
+++ b/scripts/install
@@ -7,7 +7,7 @@
 #=================================================
 
 source _common.sh
-source ynh_composer__2
+source ynh_composer__3
 source /usr/share/yunohost/helpers
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 7d25717..d03ad1d 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -7,7 +7,7 @@
 #=================================================
 
 source _common.sh
-source ynh_composer__2
+source ynh_composer__3
 source /usr/share/yunohost/helpers
 
 #=================================================
diff --git a/scripts/ynh_composer__2 b/scripts/ynh_composer__3
similarity index 76%
rename from scripts/ynh_composer__2
rename to scripts/ynh_composer__3
index 762b7f7..ca68a65 100644
--- a/scripts/ynh_composer__2
+++ b/scripts/ynh_composer__3
@@ -1,5 +1,10 @@
 #!/bin/bash
 
+readonly YNH_DEFAULT_COMPOSER_VERSION=1.10.17
+# Declare the actual composer version to use.
+# A packager willing to use another version of composer can override the variable into its _common.sh.
+YNH_COMPOSER_VERSION=${YNH_COMPOSER_VERSION:-$YNH_DEFAULT_COMPOSER_VERSION}
+
 # Execute a command with Composer
 #
 # usage: ynh_composer_exec [--phpversion=phpversion] [--workdir=$final_path] --commands="commands"
@@ -25,26 +30,29 @@ ynh_composer_exec () {
 
 # Install and initialize Composer in the given directory
 #
-# usage: ynh_install_composer [--phpversion=phpversion] [--workdir=$final_path] [--install_args="--optimize-autoloader"]
+# usage: ynh_install_composer [--phpversion=phpversion] [--workdir=$final_path] [--install_args="--optimize-autoloader"] [--composerversion=composerversion]
 # | arg: -v, --phpversion - PHP version to use with composer
 # | arg: -w, --workdir - The directory from where the command will be executed. Default $final_path.
 # | arg: -a, --install_args - Additional arguments provided to the composer install. Argument --no-dev already include
+# | arg: -c, --composerversion - Composer version to install
 ynh_install_composer () {
 	# Declare an array to define the options of this helper.
 	local legacy_args=vwa
-	declare -Ar args_array=( [v]=phpversion= [w]=workdir= [a]=install_args=)
+	declare -Ar args_array=( [v]=phpversion= [w]=workdir= [a]=install_args= [c]=composerversion=)
 	local phpversion
 	local workdir
 	local install_args
+	local composerversion
 	# Manage arguments with getopts
 	ynh_handle_getopts_args "$@"
 	workdir="${workdir:-$final_path}"
 	phpversion="${phpversion:-$YNH_PHP_VERSION}"
 	install_args="${install_args:-}"
+	composerversion="${composerversion:-$YNH_COMPOSER_VERSION}"
 
 	curl -sS https://getcomposer.org/installer \
 		| COMPOSER_HOME="$workdir/.composer" \
-		php${phpversion} -- --quiet --install-dir="$workdir" \
+		php${phpversion} -- --quiet --install-dir="$workdir" --version=$composerversion \
 		|| ynh_die "Unable to install Composer."
 
 	# update dependencies to create composer.lock