diff --git a/concurrent-machines.cabal b/concurrent-machines.cabal
--- a/concurrent-machines.cabal
+++ b/concurrent-machines.cabal
@@ -1,5 +1,5 @@
 name:                concurrent-machines
-version:             0.1.0.0
+version:             0.1.0.1
 synopsis:            Concurrent networked stream transducers
 
 description: A simple use-case for this library is to run the stages
diff --git a/tests/AllTests.hs b/tests/AllTests.hs
--- a/tests/AllTests.hs
+++ b/tests/AllTests.hs
@@ -26,7 +26,7 @@
   step "Consistent results"
   assertEqual "Results" r r'
   step "Parallelism"
-  assertBool ("Pipeline faster than sequential" ++ show (dt',dt)) (dt' * 2 < dt)
+  assertBool ("Pipeline faster than sequential" ++ show (dt',dt)) (dt' * 1.5 < dt)
 
 main :: IO ()
 main = defaultMain $