diff --git a/scripts/_common.sh b/scripts/_common.sh
index 431d04e..c414b6e 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -5,7 +5,7 @@
 #=================================================
 
 # dependencies used by the app
-pkg_dependencies="acl swig libpq-dev postgresql postgresql-contrib postgresql-common curl libopenblas-dev libmagic1 libboost-all-dev libxrender-dev liblapack-dev git bzip2 cmake build-essential libsm6 libglib2.0-0 libgl1-mesa-glx gfortran gunicorn libheif-dev libssl-dev rustc liblzma-dev python3 python3-pip python3-venv imagemagick xsel nodejs npm redis-server libmagickwand-dev libldap2-dev libsasl2-dev ufraw-batch yarnpkg"
+pkg_dependencies="acl swig libpq-dev postgresql postgresql-contrib postgresql-common curl libopenblas-dev libmagic1 libboost-all-dev libxrender-dev liblapack-dev git bzip2 cmake build-essential libsm6 libglib2.0-0 libgl1-mesa-glx gfortran gunicorn libheif-dev libssl-dev rustc liblzma-dev python3 python3-pip python3-venv imagemagick xsel nodejs npm redis-server libmagickwand-dev libldap2-dev libsasl2-dev ufraw-batch"
 
 #=================================================
 # PERSONAL HELPERS
diff --git a/scripts/install b/scripts/install
index 26c790b..5af3eb7 100755
--- a/scripts/install
+++ b/scripts/install
@@ -74,6 +74,7 @@ ynh_app_setting_set --app=$app --key=similarity_port --value=$similarity_port
 ynh_script_progression --message="Installing dependencies..." --weight=5
 
 ynh_install_app_dependencies $pkg_dependencies
+ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
 
 #=================================================
 # CREATE A POSTGRESQL DATABASE
diff --git a/scripts/restore b/scripts/restore
index a82faec..483ef7e 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -107,6 +107,7 @@ ynh_script_progression --message="Reinstalling dependencies..." --weight=60
 
 # Define and install dependencies
 ynh_install_app_dependencies $pkg_dependencies
+ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
 
 #=================================================
 # RESTORE USER RIGHTS
diff --git a/scripts/upgrade b/scripts/upgrade
index 3e64238..ad06f6a 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -108,6 +108,7 @@ ynh_add_nginx_config backend_port
 ynh_script_progression --message="Upgrading dependencies..." --weight=1
 
 ynh_install_app_dependencies $pkg_dependencies
+ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
 
 #=================================================
 # CREATE DEDICATED USER