diff --git a/scripts/upgrade b/scripts/upgrade
index 09f45a6..7f20fa4 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -67,6 +67,17 @@ chown -R $app:www-data "$data_dir/"
 #=================================================
 ynh_script_progression --message="Installing Python dependencies..." --weight=1
 
+if [ $YNH_ARCH == "armhf" ] || [ $YNH_ARCH == "armel" ]
+then
+# Install rustup is not already installed
+# We need this to be able to install cryptgraphy
+export PATH="$PATH:$install_dir/.cargo/bin:$install_dir/.local/bin:/usr/local/sbin"
+if [ -e $install_dir/.rustup ]; then
+    sudo -u "$app" env PATH=$PATH rustup update
+else
+    sudo -u "$app" bash -c 'curl -sSf -L https://static.rust-lang.org/rustup.sh | sh -s -- -y --default-toolchain=stable --profile=minimal'
+fi
+
 pushd $install_dir
 	ynh_secure_remove --file="$install_dir/virtualenv"
 	ynh_secure_remove --file="$install_dir/venv"