diff --git a/requirements-dev.txt b/requirements-dev.txt
index 2d4b3c9a3..fb7aa0d37 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,7 +4,7 @@ cov-core==1.15.0
 black==24.3.0
 pylint==3.1.0
 splinter==0.21.0
-selenium==4.20.0
+selenium==4.21.0
 Pallets-Sphinx-Themes==2.1.3
 Sphinx<=7.1.2; python_version == '3.8'
 Sphinx==7.3.7; python_version > '3.8'