diff --git a/requirements-py3.txt b/requirements-py3.txt
index c7419e4e..b72eeff2 100644
--- a/requirements-py3.txt
+++ b/requirements-py3.txt
@@ -2,7 +2,7 @@ amqp==2.3.2
 asn1crypto==0.24.0
 attrs==18.1.0
 Automat==0.7.0
-Babel==2.6.0
+Babel==2.9.1
 backoff==1.8.0
 bcrypt==3.1.4
 cachetools==2.1.0
diff --git a/requirements.txt b/requirements.txt
index e37589b0..0b060e37 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ amqp==2.2.1
 asn1crypto==0.22.0
 attrs==17.2.0
 Automat==0.6.0
-Babel==2.3.4
+Babel==2.9.1
 bcrypt==3.1.3
 cachetools==2.0.1
 certifi==2017.7.27.1