diff --git a/manifest.toml b/manifest.toml
index 466c722..dadc57e 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -58,4 +58,19 @@ ram.runtime = "50M"
     main.url = "/"
 
     [resources.apt]
-    packagess = "git, build-essential, libxslt-dev, python3-dev, python3-venv, python3-cffi, python3-babel,zlib1g-dev, libffi-dev, libssl-dev, python3-lxml, uwsgi, uwsgi-plugin-python3, shellcheck"
+    packages = [
+        "git",
+        "build-essential",
+        "libxslt-dev",
+        "python3-dev",
+        "python3-venv",
+        "python3-pip",
+        "python3-cffi",
+        "python3-babel,zlib1g-dev",
+        "libffi-dev",
+        "libssl-dev",
+        "python3-lxml",
+        "uwsgi",
+        "uwsgi-plugin-python3",
+        "shellcheck",
+    ]
diff --git a/scripts/install b/scripts/install
index 6f46933..f08e713 100644
--- a/scripts/install
+++ b/scripts/install
@@ -37,9 +37,9 @@ ynh_add_nginx_config "path_no_root"
 ynh_script_progression --message="Installing Searx..." --weight=2
 
 pushd $install_dir
-    python3 -m venv venv
-    venv/bin/pip3 install -U pip setuptools wheel pyyaml --no-cache-dir
-    venv/bin/pip3 install --requirement $install_dir/requirements-ynh.txt --no-cache-dir
+    python3 -m venv --upgrade "$install_dir/venv"
+    ynh_exec_as "$app" venv/bin/pip3 install -U pip setuptools wheel pyyaml --no-cache-dir
+    ynh_exec_as "$app" venv/bin/pip3 install --requirement $install_dir/requirements-ynh.txt --no-cache-dir
 popd
 
 #=================================================