diff --git a/requirements_static.txt b/requirements_static.txt
index 9ba7dec2..1aa02dcc 100644
--- a/requirements_static.txt
+++ b/requirements_static.txt
@@ -6,7 +6,7 @@
 #
 brotli==1.1.0
     # via -r requirements_static.in
-tinycss2==1.3.0
+tinycss2==1.4.0
     # via -r requirements_static.in
 webencodings==0.5.1
     # via tinycss2