diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,9 @@
 # Revision history for ecstasy
 
+## 0.2.0.1  -- 2018-05-10
+
+* Also export 'StorageType'.
+
 ## 0.2.0.0  -- 2018-05-10
 
 * Renamed 'get*' to 'query*'.
diff --git a/ecstasy.cabal b/ecstasy.cabal
--- a/ecstasy.cabal
+++ b/ecstasy.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                ecstasy
-version:             0.2.0.0
+version:             0.2.0.1
 synopsis:
   A GHC.Generics based entity component system.
 
diff --git a/src/Data/Ecstasy.hs b/src/Data/Ecstasy.hs
--- a/src/Data/Ecstasy.hs
+++ b/src/Data/Ecstasy.hs
@@ -19,7 +19,7 @@
 -- synonym:
 --
 -- @
---   type Entity = World 'FieldOf
+--   type Entity = World ''FieldOf'
 -- @
 --
 -- which is the only form of the @World@ that most users of ecstasy will
@@ -38,6 +38,7 @@
   -- * Storage
   -- $world
   , defStorage
+  , StorageType (..)
 
   -- * The SystemT monad
   -- $systemt