diff --git a/requirements.txt b/requirements.txt
index 38c9bf0..a7ce412 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -101,7 +101,7 @@ typeguard==2.12.0
 typer==0.3.2
 typing-extensions==3.7.4.3
 umap-learn==0.5.1
-urllib3==1.26.4
+urllib3==1.26.18
 wasabi==0.8.2
 webencodings==0.5.1
 wellcomeml==1.0.2