diff --git a/requirements.txt b/requirements.txt
index 14ad1dd3634..111f986fb98 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -51,7 +51,7 @@ pyopenssl==20.0.1
 
 # geopython dependencies
 pyproj==3.0.0.post1
-OWSLib==0.23.0
+OWSLib==0.28.1
 pycsw==2.6.0
 SQLAlchemy==1.3.23 # required by PyCSW
 Shapely==1.7.1