diff --git a/docs/rtd-pip-requirements b/docs/rtd-pip-requirements
index 5771c30fe..7c8193e68 100644
--- a/docs/rtd-pip-requirements
+++ b/docs/rtd-pip-requirements
@@ -1,5 +1,8 @@
+asdf
 numpy
 Cython
-git+http://github.com/astropy/astropy.git#egg=astropy
+astropy
+astropy-helpers
 jsonschema
-pyyaml
\ No newline at end of file
+pyyaml
+sphinx>=1.4.2