diff --git a/epubmerge.py b/epubmerge.py
index a9c51933..99e25238 100644
--- a/epubmerge.py
+++ b/epubmerge.py
@@ -216,7 +216,7 @@ def doMerge(outputio,files,authoropts=[],titleopt=None,descopt=None,
                         try:
                             outputepub.writestr(href,
                                                 epub.read(relpath+item.getAttribute("href")))
-                            if re.match(r'.*/(file|chapter)\d+\.xhtml',href):
+                            if re.match(r'.*/(file|chapter)\d+\.x?html',href):
                                 filecount+=1
                             items.append((id,href,item.getAttribute("media-type")))
                             filelist.append(href)
diff --git a/fanficdownloader/story.py b/fanficdownloader/story.py
index ca48cde7..68b24be1 100644
--- a/fanficdownloader/story.py
+++ b/fanficdownloader/story.py
@@ -25,7 +25,7 @@ class Story:
         try:
             self.metadata = {'version':os.environ['CURRENT_VERSION_ID']}
         except:
-            self.metadata = {'version':'4.0'}
+            self.metadata = {'version':'4.1'}
         self.chapters = [] # chapters will be tuples of (title,html)
         self.listables = {} # some items (extratags, category, warnings & genres) are also kept as lists.