diff --git a/continuousintegration/buildtree_runner/vmBootstrap/bootstrapCTA.sh b/continuousintegration/buildtree_runner/vmBootstrap/bootstrapCTA.sh
index 528efbdd2f4a9a7c5becc4e8c50919ea82c2ff19..87fd49d316ad4144139c5abccb07d3dd06800b2d 100755
--- a/continuousintegration/buildtree_runner/vmBootstrap/bootstrapCTA.sh
+++ b/continuousintegration/buildtree_runner/vmBootstrap/bootstrapCTA.sh
@@ -16,6 +16,17 @@ sudo yum-config-manager --add-repo=/vmBootstrap/cta-ci-xroot.repo
 sudo yum-config-manager --add-repo=/vmBootstrap/castor.repo
 sudo yum install -y yum-plugin-priorities
 
+echo Adding versionlock for xrootd:
+sudo bash -c "cat >> /etc/yum/pluginconf.d/versionlock.list << EOF
+1:xrootd-libs-4.4.1-1.el7.x86_64
+1:xrootd-devel-4.4.1-1.el7.x86_64
+1:xrootd-client-libs-4.4.1-1.el7.x86_64
+1:xrootd-server-libs-4.4.1-1.el7.x86_64
+1:xrootd-client-devel-4.4.1-1.el7.x86_64
+1:xrootd-server-devel-4.4.1-1.el7.x86_64
+1:xrootd-private-devel-4.4.1-1.el7.noarch
+EOF"
+
 echo Installing build dependencies
 sudo yum-builddep -y ~/CTA-build-srpm/RPM/SRPMS/cta-0-0.src.rpm --enablerepo=cernonly --nogpgcheck
 
diff --git a/continuousintegration/buildtree_runner/vmBootstrap/bootstrapSystem.sh b/continuousintegration/buildtree_runner/vmBootstrap/bootstrapSystem.sh
index 9efc5e0ed476c0455742f8e3e32d0d25b45604e5..ea36009ead46b5ef23e39b5e8546509f4080192f 100755
--- a/continuousintegration/buildtree_runner/vmBootstrap/bootstrapSystem.sh
+++ b/continuousintegration/buildtree_runner/vmBootstrap/bootstrapSystem.sh
@@ -21,4 +21,3 @@ sudo -u eric git config --global color.ui true
 sudo -u eric git config --global user.email "Eric.Cano@cern.ch"
 sudo -u eric git config --global user.name "Eric Cano"
 
-