diff --git a/test-requirements.txt b/test-requirements.txt
index 7eb48af72e..b38347e239 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -22,3 +22,7 @@ keystonemiddleware>=4.17.0 # Apache-2.0
 bandit>=1.1.0 # Apache-2.0
 
 docutils>=0.11  # OSI-Approved Open Source, Public Domain
+certifi>=2023.7.22 # not directly required, pinned by Snyk to avoid a vulnerability
+idna>=3.7 # not directly required, pinned by Snyk to avoid a vulnerability
+oslo.utils>=4.8.1 # not directly required, pinned by Snyk to avoid a vulnerability
+requests>=2.31.0 # not directly required, pinned by Snyk to avoid a vulnerability