diff --git a/lambdabot-reference-plugins.cabal b/lambdabot-reference-plugins.cabal
--- a/lambdabot-reference-plugins.cabal
+++ b/lambdabot-reference-plugins.cabal
@@ -1,11 +1,11 @@
 name:                   lambdabot-reference-plugins
-version:                5.3.1
+version:                5.3.1.1
 
 license:                GPL
 license-file:           LICENSE
 
 author:                 Don Stewart
-maintainer:             Bertram Felgenhauer <int-e@gmx.de>
+maintainer:             Naïm Favier <n@monade.li>
 
 category:               Development, Web
 synopsis:               Lambdabot reference plugins.
@@ -34,7 +34,7 @@
 
 build-type:             Simple
 cabal-version:          >= 1.10
-tested-with:            GHC == 8.2.2, GHC == 8.4.4, GHC == 8.6.5, GHC == 8.8.4, GHC == 8.10.4, GHC == 9.0.2, GHC == 9.2.4
+tested-with:            GHC == 8.2.2, GHC == 8.4.4, GHC == 8.6.5, GHC == 8.8.4, GHC == 8.10.4, GHC == 9.0.2, GHC == 9.2.4, GHC == 9.4.5
 
 source-repository head
   type:                 git
diff --git a/src/Lambdabot/Config/Reference.hs b/src/Lambdabot/Config/Reference.hs
--- a/src/Lambdabot/Config/Reference.hs
+++ b/src/Lambdabot/Config/Reference.hs
@@ -1,6 +1,7 @@
 {-# LANGUAGE DeriveDataTypeable #-}
 {-# LANGUAGE GADTs #-}
 {-# LANGUAGE TemplateHaskell #-}
+{-# LANGUAGE TypeOperators #-}
 {-# OPTIONS_GHC -fno-warn-overlapping-patterns #-}
 module Lambdabot.Config.Reference
     ( proxy