diff --git a/tracker/requirements.txt b/tracker/requirements.txt
index 8c091a0..8e97507 100644
--- a/tracker/requirements.txt
+++ b/tracker/requirements.txt
@@ -3,7 +3,7 @@ alabaster==0.7.10
 asn1crypto==0.24.0
 aspy.yaml==1.1.0
 attrs==17.4.0
-Babel==2.5.3
+Babel==2.9.1
 bencode.py==2.0.0
 cached-property==1.4.2
 cachetools==2.0.1