diff --git a/config/config.exs b/config/config.exs
index ed7abb83e..872ee3b00 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -194,6 +194,8 @@ config :pleroma, :http,
   send_user_agent: true,
   adapter: [
     ssl_options: [
+      # Workaround for remote server certificate chain issues
+      partial_chain: &:hackney_connect.partial_chain/1,
       # We don't support TLS v1.3 yet
       versions: [:tlsv1, :"tlsv1.1", :"tlsv1.2"]
     ]