diff --git a/.ci/init-grid-ui.sh b/.ci/init-grid-ui.sh
index fa968b29aa8..4618803f0e2 100755
--- a/.ci/init-grid-ui.sh
+++ b/.ci/init-grid-ui.sh
@@ -11,12 +11,14 @@ yum -q install -y fetch-crl
 rpm -i https://www.desy.de/~tigran/ca_dCacheORG-3.0-6.noarch.rpm
 rpm -i https://linuxsoft.cern.ch/wlcg/centos7/x86_64/desy-voms-all-1.0.0-1.noarch.rpm
 
-rpm -i https://repository.egi.eu/sw/production/cas/1/current/RPMS/ca_USERTrustRSACertificationAuthority-1.122-1.noarch.rpm
-rpm -i https://repository.egi.eu/sw/production/cas/1/current/RPMS/ca_ResearchandEducationTrustRSARootCA-1.122-1.noarch.rpm
-rpm -i https://repository.egi.eu/sw/production/cas/1/current/RPMS/ca_GEANTeScienceSSLCA4-1.122-1.noarch.rpm
-rpm -i https://repository.egi.eu/sw/production/cas/1/current/RPMS/ca_USERTrustECCCertificationAuthority-1.122-1.noarch.rpm
-rpm -i https://repository.egi.eu/sw/production/cas/1/current/RPMS/ca_GEANTeScienceSSLECCCA4-1.122-1.noarch.rpm
-rpm -i https://repository.egi.eu/sw/production/cas/1/current/RPMS/ca_GEANTTCSAuthenticationRSACA4B-1.122-1.noarch.rpm
+curl https://repository.egi.eu/sw/production/cas/1/current/repo-files/egi-trustanchors.repo -o /etc/yum.repos.d/egi-trustanchors.repo
+
+yum -y install ca_USERTrustRSACertificationAuthority \
+  ca_ResearchandEducationTrustRSARootCA \
+  ca_GEANTeScienceSSLCA4 \
+  ca_USERTrustECCCertificationAuthority \
+  ca_GEANTeScienceSSLECCCA4 \
+  ca_GEANTTCSAuthenticationRSACA4B
 
 
 curl --silent https://raw.githubusercontent.com/kofemann/autoca/v1.0-py2/pyclient/autoca-client -o autoca-client && chmod a+x autoca-client