diff --git a/invertible.cabal b/invertible.cabal
--- a/invertible.cabal
+++ b/invertible.cabal
@@ -1,5 +1,5 @@
 name:                invertible
-version:             0.2.0.5
+version:             0.2.0.6
 synopsis:            bidirectional arrows, bijective functions, and invariant functors
 description:
   Representations and operations for bidirectional arrows (total isomorphisms: an