diff --git a/manifest.toml b/manifest.toml
index 9956009..897b847 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -104,7 +104,7 @@ ram.runtime = "500M"
 
 
     [resources.apt]
-    packages = "erlang-dev erlang-parsetools erlang-os-mon erlang-tools erlang-xmerl postgresql npm node-postcss"
+    packages = "erlang-dev erlang-parsetools erlang-os-mon erlang-tools erlang-xmerl postgresql npm node-postcss node-postcss-cli"
 
     ##### (this part is optional and corresponds to the legacy ynh_install_extra_app_dependencies helper)