diff --git a/Dockerfile b/Dockerfile
index 5228200..5252687 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,7 @@ ENV LC_ALL C.UTF-8
 
 RUN apt-get -qqqy update
 RUN apt-get -qqqy install apt-utils software-properties-common
-RUN add-apt-repository -y ppa:isc/bind
+RUN add-apt-repository -y ppa:isc/bind-esv
 RUN apt-get -qqqy update
 RUN apt-get -qqqy dist-upgrade
 RUN apt-get -qqqy install bind9 bind9-utils