diff --git a/requirements.txt b/requirements.txt
index 083f1f0046095c16f132a80046a875a42f1df1d1..6ec2e80e7033b2c3f10c83526a6b556245a90fac 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
+Sphinx==1.4.8
 cycler==0.10.0
 h5py==2.9.0
 joblib==0.13.2
@@ -11,4 +12,4 @@ scipy==1.3.0
 six==1.12.0
 pandas==0.23.3
 m2r==0.2.1
-Sphinx==1.4.8
\ No newline at end of file
+docutils==0.12
\ No newline at end of file