freeze mercurial version

requires.txt

@@ -17,4 +17,4 docutils==0.8.1
 simplejson==2.5.2
 mock
 py-bcrypt
-mercurial>=2.3.0,<2.4
  No newline at end of file
+mercurial==2.3.0
  No newline at end of file

setup.py

@@ -60,10 +60,10 if sys.version_info < (2, 7):
     requirements.append("unittest2")
 
 if is_windows:
-    requirements.append("mercurial>=2.3.0,<2.4")
+    requirements.append("mercurial==2.3.0")
 else:
     requirements.append("py-bcrypt")
-    requirements.append("mercurial>=2.3.0,<2.4")
+    requirements.append("mercurial==2.3.0")
 
 
 dependency_links = [