diff --git a/requirements.txt b/requirements.txt
index 6e7fef6..7d348b8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ python-dateutil
 # Testing & documentation requirements (note these must be installable across all Tox environment)
 pytest>=3.0.7
 pytest-cov==2.4.0
-Flask-Security-Too==5.3.2
+Flask-Security-Too==5.3.3
 Flask-WTF==1.2.1
 Werkzeug==2.3.6
 sphinx==1.5.5