diff --git a/requirements.txt b/requirements.txt
index c37ce053c28..12e54a3253e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -416,7 +416,7 @@ tabulate==0.9.0
     # via
     #   qcodes (pyproject.toml)
     #   qcodes
-tinycss2==1.3.0
+tinycss2==1.4.0
     # via nbconvert
 toolz==1.0.0
     # via