diff --git a/scripts/ci/install_hadoop.sh b/scripts/ci/install_hadoop.sh
index 9b3101838..ee7e74845 100755
--- a/scripts/ci/install_hadoop.sh
+++ b/scripts/ci/install_hadoop.sh
@@ -5,7 +5,7 @@
 set -x
 set -e
 
-sudo add-apt-repository ppa:openjdk-r/ppa
+sudo add-apt-repository -y ppa:openjdk-r/ppa
 sudo apt-get update -y
 sudo apt-get install openjdk-7-jdk
 java -version