diff --git a/requirements.txt b/requirements.txt
index d15e390da61..c5b67115356 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -421,7 +421,7 @@ tabulate==0.9.0
     # via
     #   qcodes (pyproject.toml)
     #   qcodes
-tinycss2==1.4.0
+tinycss2==1.5.1
     # via bleach
 toolz==1.1.0
     # via