diff --git a/doc/build.py b/doc/build.py
index 33bcc932..f8238195 100755
--- a/doc/build.py
+++ b/doc/build.py
@@ -40,8 +40,8 @@ def create_build_env():
   except DistributionNotFound:
     pass
   # Install Sphinx and Breathe.
-  pip_install('fmtlib/sphinx',
-              '12dde8afdb0a7bb5576e2656692c3478c69d8cc3',
+  pip_install('sphinx-doc/sphinx',
+              '12b83372ac9316e8cbe86e7fed889296a4cc29ee',
               check_version='1.4a0.dev-20151013')
   pip_install('michaeljones/breathe',
               '6b1c5bb7a1866f15fc328b8716258354b10c1daa')