diff --git a/CHANGELOG b/CHANGELOG
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+- 0.8.2.5
+    * Bump attoparsec dependency
+
 - 0.8.2.4
     * Bump entropy dependency
 
diff --git a/websockets.cabal b/websockets.cabal
--- a/websockets.cabal
+++ b/websockets.cabal
@@ -1,5 +1,5 @@
 Name:    websockets
-Version: 0.8.2.4
+Version: 0.8.2.5
 
 Synopsis:
   A sensible and clean way to write WebSocket-capable servers in Haskell.
@@ -63,7 +63,7 @@
     Network.WebSockets.Types
 
   Build-depends:
-    attoparsec        >= 0.9    && < 0.12,
+    attoparsec        >= 0.9    && < 0.13,
     base              >= 4      && < 5,
     base64-bytestring >= 0.1    && < 1.1,
     binary            >= 0.5    && < 0.8,
@@ -99,7 +99,7 @@
     test-framework-hunit       >= 0.2 && < 0.4,
     test-framework-quickcheck2 >= 0.2 && < 0.4,
     -- Copied from regular dependencies...
-    attoparsec        >= 0.9    && < 0.12,
+    attoparsec        >= 0.9    && < 0.13,
     base              >= 4      && < 5,
     base64-bytestring >= 0.1    && < 1.1,
     binary            >= 0.5    && < 0.8,