diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -1,3 +1,7 @@
+0.4.2
+-----
+* Add a library dependency on the `doctests` test suite
+
 0.4.1
 -----
 * Revamp `Setup.hs` to use `cabal-doctest`. This makes it build
diff --git a/hyperloglog.cabal b/hyperloglog.cabal
--- a/hyperloglog.cabal
+++ b/hyperloglog.cabal
@@ -1,6 +1,6 @@
 name:          hyperloglog
 category:      Numeric
-version:       0.4.1
+version:       0.4.2
 license:       BSD3
 cabal-version: >= 1.8
 license-file:  LICENSE
@@ -106,5 +106,6 @@
       doctest        >= 0.9.1,
       filepath,
       generic-deriving,
+      hyperloglog,
       semigroups     >= 0.9,
       simple-reflect >= 0.3.1
diff --git a/src/Data/HyperLogLog/Type.hs b/src/Data/HyperLogLog/Type.hs
--- a/src/Data/HyperLogLog/Type.hs
+++ b/src/Data/HyperLogLog/Type.hs
@@ -85,7 +85,7 @@
 -- $setup
 -- >>> :set -XTemplateHaskell
 -- >>> :set -XDataKinds
--- >>> :load Data.HyperLogLog
+-- >>> import Data.HyperLogLog
 -- >>> import Control.Lens
 -- >>> import Data.Reflection
 -- >>> import Data.Monoid