diff --git a/appengine/standard/mailgun/requirements.txt b/appengine/standard/mailgun/requirements.txt
index 9fd60e085e54..65c136cbb828 100644
--- a/appengine/standard/mailgun/requirements.txt
+++ b/appengine/standard/mailgun/requirements.txt
@@ -1 +1 @@
-httplib2==0.9.2
+httplib2==0.10.2
diff --git a/monitoring/api/v3/requirements.txt b/monitoring/api/v3/requirements.txt
index adb19bac712c..a40675260735 100644
--- a/monitoring/api/v3/requirements.txt
+++ b/monitoring/api/v3/requirements.txt
@@ -1,7 +1,7 @@
 google-api-python-client==1.6.1
-httplib2==0.9.2
+httplib2==0.10.2
 oauth2client==4.0.0
-pyasn1==0.1.9
+pyasn1==0.2.1
 pyasn1-modules==0.0.8
 rsa==3.4.2
 simplejson==3.10.0
diff --git a/testing/requirements.txt b/testing/requirements.txt
index 45204ee0068f..1858c70cc3fa 100644
--- a/testing/requirements.txt
+++ b/testing/requirements.txt
@@ -9,7 +9,7 @@ pytest-cov==2.4.0
 pytest==3.0.6
 pyyaml==3.12
 responses==0.5.1
-WebTest==2.0.24
+WebTest==2.0.25
 webapp2==2.5.2
 google-api-python-client==1.6.1
 google-cloud-core==0.23.0