diff --git a/changelog b/changelog
--- a/changelog
+++ b/changelog
@@ -1,3 +1,7 @@
+0.4.2
+
+* Export constructors on `AccValidation` and `Validation`.
+
 0.4.1
 
 * Remove `Alternative` instances. They are obscene.
diff --git a/src/Data/Validation.hs b/src/Data/Validation.hs
--- a/src/Data/Validation.hs
+++ b/src/Data/Validation.hs
@@ -6,8 +6,8 @@
 module Data.Validation
 (
   -- * Data types
-  AccValidation
-, Validation
+  AccValidation(..)
+, Validation(..)
 , ValidationT(..)
 , Validation'
   -- * Prisms
diff --git a/validation.cabal b/validation.cabal
--- a/validation.cabal
+++ b/validation.cabal
@@ -1,5 +1,5 @@
 name:               validation
-version:            0.4.1
+version:            0.4.2
 license:            BSD3
 license-file:       LICENSE
 author:             Tony Morris <ʇǝu˙sıɹɹoɯʇ@ןןǝʞsɐɥ> <dibblego>, Nick Partridge <nkpart>