diff --git a/python/excel/requirements.txt b/python/excel/requirements.txt
index 5fc3765..e145924 100644
--- a/python/excel/requirements.txt
+++ b/python/excel/requirements.txt
@@ -153,7 +153,7 @@ terminado==0.8.3
 testpath==0.4.4
 tornado==6.0.4
 traitlets==4.3.3
-urllib3==1.25.8
+urllib3==1.26.5
 wcwidth==0.1.9
 webencodings==0.5.1
 widgetsnbextension==3.5.1
diff --git a/python/requirements.txt b/python/requirements.txt
index 5fc3765..e145924 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -153,7 +153,7 @@ terminado==0.8.3
 testpath==0.4.4
 tornado==6.0.4
 traitlets==4.3.3
-urllib3==1.25.8
+urllib3==1.26.5
 wcwidth==0.1.9
 webencodings==0.5.1
 widgetsnbextension==3.5.1