diff --git a/Data/Digest/Adler32.hsc b/Data/Digest/Adler32.hsc
--- a/Data/Digest/Adler32.hsc
+++ b/Data/Digest/Adler32.hsc
@@ -32,7 +32,7 @@
 class Adler32 a where
     -- | Compute Adler32 checksum
     adler32 :: a -> Word32
-    adler32 = adler32Update 0
+    adler32 = adler32Update 1
 
     -- | Given the Adler32 checksum of a string, compute Adler32 of its
     -- concatenation with another string (t.i., incrementally update the 
diff --git a/digest.cabal b/digest.cabal
--- a/digest.cabal
+++ b/digest.cabal
@@ -1,5 +1,5 @@
 name:            digest
-version:         0.0.0.9
+version:         0.0.1.0
 copyright:       (c) 2009 Eugene Kirpichov
 license:         BSD3
 license-file:    LICENSE