diff --git a/intro-mdp/requirements.txt b/intro-mdp/requirements.txt
index 91265bb4e..d2569b839 100644
--- a/intro-mdp/requirements.txt
+++ b/intro-mdp/requirements.txt
@@ -3,5 +3,5 @@ ncclient==0.6.4
 netmiko==1.4.2
 pyang==1.7.4
 requests==2.18.4
-urllib3==1.22
+urllib3==1.26.5
 xmltodict==0.11.0
diff --git a/intro-nfvis/requirements.txt b/intro-nfvis/requirements.txt
index 967375888..6d72651e7 100644
--- a/intro-nfvis/requirements.txt
+++ b/intro-nfvis/requirements.txt
@@ -1,4 +1,4 @@
 ciscosparkapi==0.9.2
 requests==2.18.4
-urllib3==1.22
+urllib3==1.26.5
 webexteamssdk
diff --git a/requirements.txt b/requirements.txt
index 5309e190b..4edcc81ee 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ ncclient==0.6.0
 netmiko==1.4.2
 pyang==1.7.4
 requests==2.20.0
-urllib3==1.24.2
+urllib3==1.26.5
 xmltodict==0.11.0
 ansible==2.5.4
 PrettyTable==0.7.2
diff --git a/verify/requirements.txt b/verify/requirements.txt
index eefce0177..3815acb19 100644
--- a/verify/requirements.txt
+++ b/verify/requirements.txt
@@ -2,4 +2,4 @@ webexteamsapi
 ncclient==0.6.2
 netmiko==1.4.2
 requests==2.18.4
-urllib3==1.22
+urllib3==1.26.5