diff --git a/Data/Number/FixedPrec.hs b/Data/Number/FixedPrec.hs
--- a/Data/Number/FixedPrec.hs
+++ b/Data/Number/FixedPrec.hs
@@ -28,6 +28,7 @@
   ) where
 
 import Data.Ratio
+import System.Random
 
 -- ----------------------------------------------------------------------
 -- * Auxiliary functions
@@ -72,7 +73,7 @@
 -- ----------------------------------------------------------------------
 -- ** Other general-purpose functions
             
--- | Given positive numbers /b/ and /x/, return (/n/, /r/) such that
+-- | Given positive /b/ > 1 and /x/ > 0, return (/n/, /r/) such that
 -- 
 -- * /x/ = /r/ /b/[sup /n/] and                           
 --                                   
@@ -542,3 +543,12 @@
       lo = 10000000000
       hi = 0.0000000001
 
+instance Precision e => Random (FixedPrec e) where
+  randomR (lo, hi) g = (x, g1) where
+    n = getprec x  -- precision in decimal digits
+    lo_n = floor (lo * 10^n)
+    hi_n = floor (hi * 10^n)
+    (x_n, g1) = randomR (lo_n, hi_n) g
+    x = 0.1^n * fromInteger x_n
+    
+  random = randomR (0, 1)
diff --git a/fixedprec.cabal b/fixedprec.cabal
--- a/fixedprec.cabal
+++ b/fixedprec.cabal
@@ -1,14 +1,13 @@
 Name:           fixedprec
--- don't forget to bump the "this" source tag
-Version:        0.2
+Version:        0.2.1.0
 License:        BSD3
 cabal-version:  >= 1.8
 Build-type:	Simple
 License-file:   LICENSE
-Copyright:	(c) 2013 Peter Selinger
+Copyright:	Copyright (c) 2013 Peter Selinger
 Author:         Peter Selinger
 Maintainer:     selinger@mathstat.dal.ca
-Stability:	alpha
+Stability:	beta
 Category:       Data, Math
 Synopsis:       A fixed-precision real number type
 Description:
@@ -21,7 +20,7 @@
 
 Library
   Build-Depends:
-    base >= 3 && < 5
+    base >= 3 && < 5, random ==1.0.*
 
   Exposed-modules:
     Data.Number.FixedPrec