diff --git a/requirements-dev.txt b/requirements-dev.txt
index e3030344dd..61931daa15 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -105,7 +105,7 @@ traitlets==5.0.5
 twine==3.2.0
 typed-ast==1.4.1
 typing-extensions==3.7.4.3
-urllib3==1.26.3
+urllib3==1.26.4
 virtualenv==20.2.1
 wcwidth==0.2.5
 webencodings==0.5.1
diff --git a/requirements-test.txt b/requirements-test.txt
index 99bfbcf911..017d8564b0 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -16,7 +16,7 @@ PyYAML==5.4
 s3fs==0.4.2
 s3transfer==0.3.4
 six==1.15.0
-urllib3==1.26.3
+urllib3==1.26.4
 coverage==5.4
 whylabs-datasketches==2.2.0b1
 freezegun==1.1.0
diff --git a/requirements.txt b/requirements.txt
index 3af0e8b9e5..36a19fdc1d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ pytz==2020.5
 PyYAML==5.4
 s3transfer==0.3.3
 six==1.15.0
-urllib3==1.26.3
+urllib3==1.26.4
 whylabs-datasketches==2.2.0b1
 xlrd==2.0.1
 openpyxl==3.0.6