diff --git a/docs/rtfd-requirements.txt b/docs/rtfd-requirements.txt
index d02c7aa..31035ad 100644
--- a/docs/rtfd-requirements.txt
+++ b/docs/rtfd-requirements.txt
@@ -2,6 +2,6 @@ attrs==19.1.0
 cffi==1.12.2
 Sphinx==1.8.4
 sphinx-rtd-theme==0.4.3
-sphinxcontrib-websupport==1.1.0
+sphinxcontrib-websupport==1.2.3
 trio==0.11.0
 git+https://github.com/Ninpo/trio-inotify.git