diff --git a/docs/requirements.txt b/docs/requirements.txt
index 37c3ffd..77eb830 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,7 +1,7 @@
 # This file is used to setup env
 # to generate documentation.
 
-sphinx==2.4.4
+sphinx==3.2.0
 sphinx_autodoc_typehints==1.10.3
 recommonmark==0.6.0
 m2r==0.2.1