diff --git a/dev-requirements.txt b/dev-requirements.txt
index 77ab652..97443d7 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -24,7 +24,7 @@ wheel
 Sphinx>=4.3.0,<6.2.0
 
 # Sphinx theme: https://sphinx-themes.org/sample-sites/furo/
-furo==2022.12.7
+furo==2023.5.20
 
 # Lets Sphinx parse markdown files in addition to rst.
 myst-parser>=0.15.2,<0.19.0