diff --git a/requirements_dev.txt b/requirements_dev.txt
index 30dbdc2..6459b4e 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -10,5 +10,5 @@ Sphinx==2.1.2
 cryptography==2.7
 PyYAML==5.1.2
 pytest==5.0.1
-docutils==0.15.2
+docutils==0.21.1
 pluggy==0.12.0
\ No newline at end of file