diff --git a/hgext/lfs/__init__.py b/hgext/lfs/__init__.py
--- a/hgext/lfs/__init__.py
+++ b/hgext/lfs/__init__.py
@@ -399,7 +399,7 @@
     def pointer(v):
         # In the file spec, version is first and the other keys are sorted.
         sortkeyfunc = lambda x: (x[0] != b'version', x)
-        items = sorted(pycompat.iteritems(pointers[v]), key=sortkeyfunc)
+        items = sorted(pointers[v].items(), key=sortkeyfunc)
         return util.sortdict(items)
 
     makemap = lambda v: {
diff --git a/hgext/lfs/pointer.py b/hgext/lfs/pointer.py
--- a/hgext/lfs/pointer.py
+++ b/hgext/lfs/pointer.py
@@ -40,7 +40,7 @@
 
     def serialize(self):
         sortkeyfunc = lambda x: (x[0] != b'version', x)
-        items = sorted(pycompat.iteritems(self.validate()), key=sortkeyfunc)
+        items = sorted(self.validate().items(), key=sortkeyfunc)
         return b''.join(b'%s %s\n' % (k, v) for k, v in items)
 
     def oid(self):