diff --git a/Numeric/Random/Generator/MT19937.hs b/Numeric/Random/Generator/MT19937.hs
--- a/Numeric/Random/Generator/MT19937.hs
+++ b/Numeric/Random/Generator/MT19937.hs
@@ -66,8 +66,8 @@
 
 module Numeric.Random.Generator.MT19937 (W, genrand, test) where
 
-import Data.Word
-import Data.Bits
+import Data.Word (Word32)
+import Data.Bits (Bits, shiftL, shiftR, complement, xor, bit, (.|.), (.&.))
 
 infixl 8 .<<., .>>.
 
diff --git a/dsp.cabal b/dsp.cabal
--- a/dsp.cabal
+++ b/dsp.cabal
@@ -1,6 +1,6 @@
 Cabal-Version:    2.2
 Name:             dsp
-Version:          0.2.5.1
+Version:          0.2.5.2
 License:          GPL-2.0-only
 License-File:     COPYING
 Copyright:        Matt Donadio, 2003
@@ -17,7 +17,7 @@
 Build-Type:       Simple
 
 Source-Repository this
-  Tag:         0.2.5.1
+  Tag:         0.2.5.2
   Type:        darcs
   Location:    http://code.haskell.org/~thielema/dsp/