diff --git a/requirements.txt b/requirements.txt
index 8503548964..759b9c6958 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -348,7 +348,7 @@ svglib==1.5.1
     # via easy-thumbnails
 tif2geojson==0.1.3
     # via geotrek (setup.py)
-tinycss2==1.3.0
+tinycss2==1.4.0
     # via
     #   cairosvg
     #   cssselect2