diff --git a/setup.cfg b/setup.cfg
index dbb01022..bd1139a8 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -34,7 +34,7 @@ install_requires =
     Flask-RESTful~=0.3
     Flask-SQLAlchemy~=2.4
     Flask-WTF~=0.14,>=0.14.3  # See b76da172652da94c1f9c4b2fdd965375da8a2c3f
-    WTForms>=2.2.1,<2.4
+    WTForms>=2.3.1,<2.4
     Flask>=1.1,<3.0
     itsdangerous>=1.1,<3.0
     Jinja2>=3.0,<4.0