diff --git a/requirements/doc.txt b/requirements/doc.txt
index ce6e5b8fa..1e1d4bcff 100644
--- a/requirements/doc.txt
+++ b/requirements/doc.txt
@@ -1,4 +1,4 @@
 docutils==0.13.1
-releases==1.3.0 # updated from 1.2.0
+releases==1.3.1 # updated from 1.2.0
 sphinx==1.5.6
 alabaster==0.7.10