diff --git a/requirements_dev.txt b/requirements_dev.txt
index 6d3339f..095207b 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -15,4 +15,4 @@ PyUtilib==6.0.0
 setuptools==40.4.3
 six==1.11.0
 tables==3.4.4
-urllib3==1.25.2
\ No newline at end of file
+urllib3==1.26.5
\ No newline at end of file