diff --git a/requirements_dev.txt b/requirements_dev.txt
index cc9db37..6d5ce3a 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -12,6 +12,6 @@ pytest-sugar==0.9.4
 coveralls==3.2.0
 ase==3.22.0
 git+https://github.com/atomistic-machine-learning/schnetpack.git
-sphinx==4.2.0
+sphinx==4.3.0
 sphinx-rtd-theme==0.5.2
 git+https://github.com/crossnox/m2r@dev#egg=m2r