diff --git a/pyproject.toml b/pyproject.toml
index 0eede48..397d551 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ classifiers = [
 license = {text = "GNU General Public License v3+"}
 requires-python = ">= 3.8"
 dependencies = [
-        "WuttaWeb>=0.20.6",
+        "WuttaWeb>=0.21.5",
 ]
 
 [project.optional-dependencies]