diff --git a/hakyll.cabal b/hakyll.cabal
--- a/hakyll.cabal
+++ b/hakyll.cabal
@@ -1,5 +1,5 @@
 Name:               hakyll
-Version:            3.0.2.1
+Version:            3.0.2.2
 
 Synopsis:           A simple static site generator library.
 Description:        A simple static site generator library, mainly aimed at
diff --git a/src/Hakyll/Core/Util/File.hs b/src/Hakyll/Core/Util/File.hs
--- a/src/Hakyll/Core/Util/File.hs
+++ b/src/Hakyll/Core/Util/File.hs
@@ -47,7 +47,7 @@
             return $ if includeDirs then topdir : concat paths
                                     else concat paths
   where
-    isProper = not . (== ".") . take 1
+    isProper = (`notElem` [".", ".."])
 
 -- | Check if a timestamp is obsolete compared to the timestamps of a number of
 -- files. When they are no files, it is never obsolete.