diff --git a/bookkeeping.cabal b/bookkeeping.cabal
--- a/bookkeeping.cabal
+++ b/bookkeeping.cabal
@@ -1,5 +1,5 @@
 name:                bookkeeping
-version:             0.2.1.0
+version:             0.2.1.1
 synopsis:            A module for bookkeeping by double entry.
 description:
     A module for bookkeeping by double entry. This module provides a way to do bookkeeping programmatically.
@@ -25,8 +25,6 @@
   default-language:    Haskell2010
   default-extensions:  OverloadedStrings
                      , RecordWildCards
-                     , Strict
-                     , StrictData
   other-extensions:    GeneralizedNewtypeDeriving
 
 test-suite bookkeeping-test
diff --git a/src/Business/Bookkeeping.hs b/src/Business/Bookkeeping.hs
--- a/src/Business/Bookkeeping.hs
+++ b/src/Business/Bookkeeping.hs
@@ -1,4 +1,6 @@
 {-# LANGUAGE GeneralizedNewtypeDeriving #-}
+{-# LANGUAGE Strict #-}
+{-# LANGUAGE StrictData #-}
 
 {- |
 Module      :  Business.Bookkeeping