diff --git a/Codec/Archive/Zip.hs b/Codec/Archive/Zip.hs
--- a/Codec/Archive/Zip.hs
+++ b/Codec/Archive/Zip.hs
@@ -665,7 +665,7 @@
 putDigitalSignature :: Maybe B.ByteString -> Put
 putDigitalSignature Nothing = return ()
 putDigitalSignature (Just sig) = do
-  putWord32le 0x08064b50
+  putWord32le 0x05054b50
   putWord16le $ fromIntegral $ B.length sig
   putLazyByteString sig
 
diff --git a/zip-archive.cabal b/zip-archive.cabal
--- a/zip-archive.cabal
+++ b/zip-archive.cabal
@@ -1,5 +1,5 @@
 Name:                zip-archive
-Version:             0.1.3.1
+Version:             0.1.3.2
 Cabal-Version:       >= 1.10
 Build-type:          Simple
 Synopsis:            Library for creating and modifying zip archives.