diff --git a/free-functors.cabal b/free-functors.cabal
--- a/free-functors.cabal
+++ b/free-functors.cabal
@@ -1,5 +1,5 @@
 name:                free-functors
-version:             0.6.3.2
+version:             0.6.3.3
 synopsis:            Provides free functors that are adjoint to functors that forget class constraints.
 description:         A free functor is a left adjoint to a forgetful functor. It used to be the case
                      that the only category that was easy to work with in Haskell was Hask itself, so
@@ -45,7 +45,7 @@
     constraints >= 0.3.2 && < 0.5,
     transformers >= 0.2.0.0 && < 0.5,
     comonad >= 4.0 && < 4.3,
-    void >= 0.4 && < 0.7,
+    void >= 0.4 && < 0.8,
     algebraic-classes >= 0.5 && < 0.6,
     template-haskell >= 2.8.0.0 && < 2.9.1