diff --git a/doc-requirements.txt b/doc-requirements.txt
index 3432a16d1de7..5d3f8759a0a7 100644
--- a/doc-requirements.txt
+++ b/doc-requirements.txt
@@ -6,7 +6,7 @@
 # Install the documentation requirements with:
 #     pip install -r doc-requirements.txt
 #
-sphinx>1.3,!=1.5.0
+sphinx>=1.3,!=1.5.0
 numpydoc
 ipython
 mock