diff --git a/pip-sample/requirements.txt b/pip-sample/requirements.txt
index 680d0816..e5c1895c 100644
--- a/pip-sample/requirements.txt
+++ b/pip-sample/requirements.txt
@@ -38,7 +38,7 @@ parso==0.3.1
 pexpect==4.6.0
 pickleshare==0.7.5
 prometheus-client==0.3.1
-protobuf==3.6.1
+protobuf==3.18.3
 protobuf-to-dict==0.1.0
 ptyprocess==0.6.0
 Pygments==2.2.0
@@ -48,7 +48,7 @@ python-dateutil==2.7.3
 pytz==2018.5
 pyzmq==17.1.2
 qtconsole==4.4.1
-requests==2.19.1
+requests==2.20
 requests-oauthlib==1.0.0
 Send2Trash==1.5.0
 simplegeneric==0.8.1
@@ -58,7 +58,7 @@ testpath==0.4.1
 tornado==5.1.1
 traitlets==4.3.2
 tweepy==3.6.0
-urllib3==1.23
+urllib3==1.26.5
 virtualenv==16.0.0
 wcwidth==0.1.7
 webencodings==0.5.1