diff --git a/requirements/base.txt b/requirements/base.txt
index 74be894..8d92d6b 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -1,5 +1,5 @@
 Django==1.7.4
-bpython==0.13.1
+bpython==0.13.2
 django-braces==1.4.0
 django-model-utils==2.2
 django-crispy-forms==1.4.0
@@ -7,9 +7,9 @@ logutils==0.3.3
 psycopg2==2.5.4
 passlib==1.6.2
 celery==3.1.17
-billiard==3.3.0.19
-kombu==3.0.24
-pytz==2014.10
+billiard==3.3.0.23
+kombu==3.0.37
+pytz==2019.1
 pyaml==14.12.10
 django-allauth==0.19.0
 oauthlib==0.7.2