diff --git a/Network/HTTP/Date/Converter.hs b/Network/HTTP/Date/Converter.hs
--- a/Network/HTTP/Date/Converter.hs
+++ b/Network/HTTP/Date/Converter.hs
@@ -63,7 +63,7 @@
   , hdDay    = d
   , hdHour   = h
   , hdMinute = n
-  , hdSecond = round s
+  , hdSecond = truncate s
   , hdWkday  = fromEnum (w :: Int)
   }
   where
diff --git a/http-date.cabal b/http-date.cabal
--- a/http-date.cabal
+++ b/http-date.cabal
@@ -1,5 +1,5 @@
 Name:                   http-date
-Version:                0.0.7
+Version:                0.0.8
 Author:                 Kazu Yamamoto <kazu@iij.ad.jp>
 Maintainer:             Kazu Yamamoto <kazu@iij.ad.jp>
 License:                BSD3