diff --git a/site-cookbooks/kosmos-mastodon/recipes/default.rb b/site-cookbooks/kosmos-mastodon/recipes/default.rb
index 50c7098..ee9d5d6 100644
--- a/site-cookbooks/kosmos-mastodon/recipes/default.rb
+++ b/site-cookbooks/kosmos-mastodon/recipes/default.rb
@@ -42,8 +42,9 @@ user mastodon_user do
   home mastodon_path
 end
 
-package %w(imagemagick ffmpeg libxml2-dev libxslt1-dev file git curl pkg-config
-           libprotobuf-dev protobuf-compiler libidn11 libidn11-dev libjemalloc1)
+package %w(build-essential imagemagick ffmpeg libxml2-dev libxslt1-dev file git
+           curl pkg-config libprotobuf-dev protobuf-compiler libidn11
+           libidn11-dev libjemalloc2 libpq-dev)
 
 npm_package "yarn" do
   version "1.22.4"