diff --git a/snap-server.cabal b/snap-server.cabal
--- a/snap-server.cabal
+++ b/snap-server.cabal
@@ -1,5 +1,5 @@
 name:           snap-server
-version:        0.9.4.4
+version:        0.9.4.5
 synopsis:       A fast, iteratee-based, epoll-enabled web server for the Snap Framework
 description:
   Snap is a simple and fast web development framework and server written in
@@ -90,7 +90,7 @@
     Control.Concurrent.Extended
 
   build-depends:
-    attoparsec                >= 0.10     && < 0.12,
+    attoparsec                >= 0.10     && < 0.13,
     attoparsec-enumerator     >= 0.3      && < 0.4,
     base                      >= 4        && < 5,
     blaze-builder             >= 0.2.1.4  && < 0.4,
diff --git a/test/snap-server-testsuite.cabal b/test/snap-server-testsuite.cabal
--- a/test/snap-server-testsuite.cabal
+++ b/test/snap-server-testsuite.cabal
@@ -18,7 +18,7 @@
 
   build-depends:
     QuickCheck                 >= 2,
-    attoparsec                 >= 0.10     && <0.12,
+    attoparsec                 >= 0.10     && <0.13,
     attoparsec-enumerator      >= 0.3      && <0.4,
     base                       >= 4        && <5,
     base16-bytestring          == 0.1.*,
@@ -90,7 +90,7 @@
 
   build-depends:
     QuickCheck                >= 2,
-    attoparsec                >= 0.10    && <0.12,
+    attoparsec                >= 0.10    && <0.13,
     attoparsec-enumerator     >= 0.3     && <0.4,
     base                      >= 4       && <5,
     base16-bytestring         == 0.1.*,
@@ -156,7 +156,7 @@
 
   build-depends:
     QuickCheck                 >= 2,
-    attoparsec                 >= 0.10     && <0.11,
+    attoparsec                 >= 0.10     && <0.13,
     attoparsec-enumerator      >= 0.3      && <0.4,
     base                       >= 4        && <5,
     binary                     >= 0.5      && <0.7,