diff --git a/appengine/flexible/django_cloudsql/requirements.txt b/appengine/flexible/django_cloudsql/requirements.txt
index 13bbb36c1da7..7065a53e6e78 100644
--- a/appengine/flexible/django_cloudsql/requirements.txt
+++ b/appengine/flexible/django_cloudsql/requirements.txt
@@ -1,4 +1,4 @@
 Django==1.10.1
-mysqlclient==1.3.8
+mysqlclient==1.3.9
 wheel==0.30.0a0
 gunicorn==19.6.0
diff --git a/container_engine/django_tutorial/requirements.txt b/container_engine/django_tutorial/requirements.txt
index 13bbb36c1da7..7065a53e6e78 100644
--- a/container_engine/django_tutorial/requirements.txt
+++ b/container_engine/django_tutorial/requirements.txt
@@ -1,4 +1,4 @@
 Django==1.10.1
-mysqlclient==1.3.8
+mysqlclient==1.3.9
 wheel==0.30.0a0
 gunicorn==19.6.0
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 7cc6480bcc61..50c44e82140e 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -30,7 +30,7 @@ kinto==4.2.0
 mailjet-rest==v1.2.2
 mock==2.0.0
 mysql-python==1.2.5; python_version == '2.7'
-mysqlclient==1.3.8
+mysqlclient==1.3.9
 numpy==1.11.2rc1
 oauth2client==3.0.0
 Pillow==3.3.1