diff --git a/hierarchy.cabal b/hierarchy.cabal
--- a/hierarchy.cabal
+++ b/hierarchy.cabal
@@ -1,5 +1,5 @@
 name:          hierarchy
-version:       0.2.0
+version:       0.2.1
 synopsis:      Pipes-based library for predicated traversal of generated trees
 description:   Pipes-based library for predicated traversal of generated trees
 homepage:      https://github.com/jwiegley/hierarchy
diff --git a/test/Main.hs b/test/Main.hs
--- a/test/Main.hs
+++ b/test/Main.hs
@@ -36,8 +36,8 @@
             liftIO $ putStrLn "We found a Haskell file!"
 
     found <- toListM $ enumerate (walk files)
-    found `shouldBe` [ "./Control/Cond.hs"
-                     , "./Pipes/Tree.hs"
-                     , "./Setup.hs"
-                     , "./test/doctest.hs"
-                     , "./test/Main.hs" ]
+    sort found `shouldBe` [ "./Control/Cond.hs"
+                          , "./Pipes/Tree.hs"
+                          , "./Setup.hs"
+                          , "./test/Main.hs"
+                          , "./test/doctest.hs" ]