diff --git a/operations/run_analysis/requirements.txt b/operations/run_analysis/requirements.txt
index 972e5cc..492e85b 100644
--- a/operations/run_analysis/requirements.txt
+++ b/operations/run_analysis/requirements.txt
@@ -7,3 +7,4 @@ requests==2.20.0
 requests-http-signature==v0.0.3
 tqdm==4.19.4
 git+git://github.com/broadinstitute/cromwell-tools.git@v0.3.1
+urllib3>=2.6.0 # not directly required, pinned by Snyk to avoid a vulnerability