diff --git a/pyproject.toml b/pyproject.toml
index c6962fc..d33fc3f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ license = "BSD-3-Clause"
 
 [tool.poetry.dependencies]
 python = ">=3.6"
-wagtail = ">=2.15.0, <4.0"
+wagtail = ">=2.15.0, <4.2"
 
 [tool.poetry.dev-dependencies]
 pytest = "^3.0"