diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,9 @@
 # Changelog for chassis
 
+## v0.0.4.0
+
+* Export Env and EnvT constructors.
+
 ## v0.0.3.0
 
 * Add `rcast` and `(>$<)`.
diff --git a/chassis.cabal b/chassis.cabal
--- a/chassis.cabal
+++ b/chassis.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           chassis
-version:        0.0.3.0
+version:        0.0.4.0
 synopsis:       Prelude with algebraic constructs and polykinds on.
 category:       Prelude
 author:         Daniel Firth
diff --git a/src/Chassis.hs b/src/Chassis.hs
--- a/src/Chassis.hs
+++ b/src/Chassis.hs
@@ -83,7 +83,8 @@
 , join
 , (=<<)
 , CoRec(..)
-, Env
+, Env(..)
+, EnvT(..)
 , env
 , runEnv
 , runEnvT