diff --git a/docs/requirements.txt b/docs/requirements.txt
index 2593551d3..dea412e79 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,5 +1,5 @@
 histolab
-sphinx==4.3.0
+sphinx==4.3.1
 sphinx-rtd-theme
 sphinxcontrib-katex
 sphinxemoji