diff --git a/.travis.yml b/.travis.yml
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,13 +1,14 @@
 env:
- - GHCVER=7.4.2 CABALVER=1.16
- - GHCVER=7.6.3 CABALVER=1.16
+ - GHCVER=7.4.2 CABALVER=1.18
+ - GHCVER=7.6.3 CABALVER=1.18
  - GHCVER=7.8.4 CABALVER=1.18
- - GHCVER=7.10.1 CABALVER=1.22
- - GHCVER=head CABALVER=1.22
+ - GHCVER=7.10.2 CABALVER=1.22
+ - GHCVER=8.0.1 CABALVER=1.24
+ - GHCVER=head CABALVER=1.24
 
 matrix:
   allow_failures:
-   - env: GHCVER=head CABALVER=1.22
+   - env: GHCVER=head CABALVER=1.24
 
 before_install:
  - travis_retry sudo add-apt-repository -y ppa:hvr/ghc
diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -1,8 +1,13 @@
+4.12.3
+------
+* Support `comonad` 5
+
 4.12.2
 ------
 * Add instances for `ExceptT`: like `ErrorT`, but without an `Error` constraint.
 * Support `containers`
 * Support `transformers` 0.5
+
 
 4.12.1
 ------
diff --git a/free.cabal b/free.cabal
--- a/free.cabal
+++ b/free.cabal
@@ -1,6 +1,6 @@
 name:          free
 category:      Control, Monads
-version:       4.12.2
+version:       4.12.3
 license:       BSD3
 cabal-version: >= 1.10
 license-file:  LICENSE
@@ -69,7 +69,7 @@
   build-depends:
     base                 == 4.*,
     bifunctors           >= 4 && < 6,
-    comonad              == 4.*,
+    comonad              >= 4 && < 6,
     distributive         >= 0.2.1,
     mtl                  >= 2.0.1.0 && < 2.3,
     prelude-extras       >= 0.4 && < 1,