diff --git a/requirements/base.txt b/requirements/base.txt
index e253c969..7be488c1 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -100,4 +100,5 @@ iso639-lang==2.6.3  # https://pypi.org/project/iso639-lang/
 
 # PyCountry
 # ------------------------------------------------------------------------------
-pycountry==24.6.1  # https://pypi.org/project/pycountry/
\ No newline at end of file
+pycountry==24.6.1  # https://pypi.org/project/pycountry/
+tornado>=6.5.3 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file