diff --git a/setup.py b/setup.py
index 362c0982e3..601bf29ba2 100644
--- a/setup.py
+++ b/setup.py
@@ -43,7 +43,7 @@
 extras_require = {
     'voice': ['PyNaCl>=1.3.0,<1.5'],
     'docs': [
-        'sphinx==4.2.0',
+        'sphinx==4.3.0',
         'sphinxcontrib_trio==1.1.2',
         'sphinxcontrib-websupport',
     ],