diff --git a/hedis.cabal b/hedis.cabal
--- a/hedis.cabal
+++ b/hedis.cabal
@@ -1,5 +1,5 @@
 name:               hedis
-version:            0.6.2
+version:            0.6.3
 synopsis:
     Client library for the Redis datastore: supports full command set,  
     pipelining.
@@ -86,7 +86,7 @@
   ghc-options:      -Wall
   ghc-prof-options: -auto-all
   exposed-modules:  Database.Redis
-  build-depends:    attoparsec == 0.10.*,
+  build-depends:    attoparsec >= 0.10,
                     base == 4.*,
                     BoundedChan == 1.0.*,
                     bytestring >= 0.9 && < 0.11,
diff --git a/test/Test.hs b/test/Test.hs
--- a/test/Test.hs
+++ b/test/Test.hs
@@ -70,7 +70,7 @@
 testConstantSpacePipelining = testCase "constant-space pipelining" $ do
     -- This testcase should not exceed the maximum heap size, as set in
     -- the run-test.sh script.
-    replicateM_ 1000000 ping
+    replicateM_ 100000 ping
     -- If the program didn't crash, pipelining takes constant memory.
     assert True