diff --git a/requirements/development.txt b/requirements/development.txt
index ee6d2ab5bc3..a4911c9297e 100644
--- a/requirements/development.txt
+++ b/requirements/development.txt
@@ -83,3 +83,6 @@ xlrd==2.0.1
 
 # The following packages are considered to be unsafe in a requirements file:
 # setuptools
+flask>=2.2.5 # not directly required, pinned by Snyk to avoid a vulnerability
+jinja2>=3.1.3 # not directly required, pinned by Snyk to avoid a vulnerability
+werkzeug>=2.2.3 # not directly required, pinned by Snyk to avoid a vulnerability