diff --git a/monoidal-functors.cabal b/monoidal-functors.cabal
index beb82b5..51ccdec 100644
--- a/monoidal-functors.cabal
+++ b/monoidal-functors.cabal
@@ -1,4 +1,4 @@
-cabal-version:       3.4
+cabal-version:       2.4
 name:                monoidal-functors
 category:            Control, Categories
 version:             0.2.2.0