diff --git a/requirements_dev.txt b/requirements_dev.txt
index 7e1f54b..144033c 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -10,3 +10,8 @@ twine==3.1.1
 
 pytest==4.6.5
 pytest-runner==5.1
+certifi>=2024.7.4 # not directly required, pinned by Snyk to avoid a vulnerability
+idna>=3.7 # not directly required, pinned by Snyk to avoid a vulnerability
+jinja2>=3.1.4 # not directly required, pinned by Snyk to avoid a vulnerability
+pygments>=2.15.0 # not directly required, pinned by Snyk to avoid a vulnerability
+requests>=2.31.0 # not directly required, pinned by Snyk to avoid a vulnerability