diff --git a/setup.cfg b/setup.cfg
index 556c9ace..c3ec1855 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -37,7 +37,7 @@ install_requires =
     WTForms~=2.2.1,<2.3  # See #567
     Flask>=1.1,<3.0
     itsdangerous>=1.1,<3.0
-    Jinja2~=2.11
+    Jinja2>=2.11,<4.0
     requests~=2.22
     SQLAlchemy-Continuum~=1.3
     SQLAlchemy~=1.3.0  # New 1.4 changes API, see #728