diff --git a/tools/requirements_tests.txt b/tools/requirements_tests.txt
index bd2cfe6c564bce..745125b26850fa 100644
--- a/tools/requirements_tests.txt
+++ b/tools/requirements_tests.txt
@@ -4,3 +4,4 @@ jsonschema==4.17.3
 pyyaml==6.0.1
 taskcluster==59.2.0
 mozterm==1.0.0
+aiohttp>=3.10.2 # not directly required, pinned by Snyk to avoid a vulnerability