diff --git a/installer/requirements-dev.txt b/installer/requirements-dev.txt
index 958c3b5f..1be5397a 100644
--- a/installer/requirements-dev.txt
+++ b/installer/requirements-dev.txt
@@ -18,7 +18,7 @@
 Pygments==1.6
 pytz==2013b
 sqlparse==0.1.7
-Babel==0.9.6
+Babel==2.9.1
 Genshi==0.6.1
 -e ../trac
 TracAccountManager
diff --git a/installer/requirements.txt b/installer/requirements.txt
index a827b781..8817b26a 100644
--- a/installer/requirements.txt
+++ b/installer/requirements.txt
@@ -18,7 +18,7 @@
 Pygments==1.6
 pytz==2013b
 sqlparse==0.1.7
-Babel==0.9.6
+Babel==2.9.1
 Genshi==0.6.1
 ../trac
 TracAccountManager