diff --git a/requirements.txt b/requirements.txt
index ed1e9deea..887c878b4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 cffi==1.11.5
-celery==3.1.25 # pyup: <4
+celery==3.1.26.post2 # pyup: <4
 docopt==0.6.2
 Flask-Bcrypt==0.7.1
 Flask-Marshmallow==0.8.0