diff --git a/webhook/requirements-dev.txt b/webhook/requirements-dev.txt
index 40c7047..da60f65 100644
--- a/webhook/requirements-dev.txt
+++ b/webhook/requirements-dev.txt
@@ -55,7 +55,7 @@ six==1.15.0
 sniffio==1.1.0
 starlette==0.13.4
 toml==0.10.1
-urllib3==1.25.9
+urllib3==1.26.18
 uvicorn==0.11.7
 uvloop==0.14.0
 wcwidth==0.2.5