diff --git a/requirements/common.in b/requirements/common.in
index d576656b43..02e6a66a90 100644
--- a/requirements/common.in
+++ b/requirements/common.in
@@ -112,7 +112,7 @@ pylibmc==1.5.2
 python-dateutil==2.6.1
 
 # Needed for timezone work
-pytz==2018.3
+pytz==2018.4
 
 # Needed for redis
 redis==2.10.6
diff --git a/requirements/dev.txt b/requirements/dev.txt
index c71246c381..6595e3aa7e 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -133,7 +133,7 @@ python-gcm==0.4
 python-ldap==3.0.0        # via django-auth-ldap, pyldap
 python-twitter==3.4.1
 python3-openid==3.1.0     # via social-auth-core
-pytz==2018.3
+pytz==2018.4
 pyyaml==3.12              # via pyaml
 qrcode==4.0.4             # via django-two-factor-auth
 queuelib==1.4.2           # via scrapy
diff --git a/requirements/prod.txt b/requirements/prod.txt
index 98793e9352..42bcc1e5b0 100644
--- a/requirements/prod.txt
+++ b/requirements/prod.txt
@@ -95,7 +95,7 @@ python-gcm==0.4
 python-ldap==3.0.0        # via django-auth-ldap
 python-twitter==3.4.1
 python3-openid==3.1.0     # via social-auth-core
-pytz==2018.3
+pytz==2018.4
 qrcode==4.0.4             # via django-two-factor-auth
 redis==2.10.6
 regex==2017.11.9