diff --git a/automaton/automaton.cabal b/automaton/automaton.cabal
index 4e560f56..3a0285fc 100644
--- a/automaton/automaton.cabal
+++ b/automaton/automaton.cabal
@@ -47,6 +47,7 @@ common opts
   default-extensions:
     Arrows
     DataKinds
+    DerivingStrategies
     FlexibleContexts
     FlexibleInstances
     ImportQualifiedPost