diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 80e7574db7b6e699404ebb536e95bc3414d816a0..fb41f6b0fd52be97f227cde2074996c2d3d00be5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -8,7 +8,7 @@ slc6-gcc48:
     - source .gitlab-ci.d/init_x86_64.sh
     - mkdir build 
     - cd build
-    - cmake -GNinja -D DD4HEP_USE_GEANT4=ON -D DD4HEP_USE_BOOST=ON -DBoost_NO_BOOST_CMAKE=ON -D DD4HEP_USE_LCIO=ON -D BUILD_TESTING=ON  -D Geant4_DIR=$G4INSTALL/lib64/Geant4-10.2.2 -D DD4HEP_USE_CXX11=ON -DCMAKE_BUILD_TYPE=Debug ..        
+    - cmake -GNinja -D DD4HEP_USE_GEANT4=ON -D DD4HEP_USE_BOOST=ON -DBoost_NO_BOOST_CMAKE=ON -D DD4HEP_USE_LCIO=ON -D BUILD_TESTING=ON  -D Geant4_DIR=$G4INSTALL/lib64/Geant4-10.2.2 -D DD4HEP_USE_CXX11=ON -DCMAKE_BUILD_TYPE=Debug -DDD4HEP_USE_XERCESC=ON ..        
     - ninja
     - ninja install
     - . ../bin/thisdd4hep.sh
@@ -34,7 +34,7 @@ slc6-gcc49:
     - source .gitlab-ci.d/init_x86_64.sh
     - mkdir build 
     - cd build
-    - cmake -GNinja -D DD4HEP_USE_GEANT4=ON -D DD4HEP_USE_BOOST=ON -DBoost_NO_BOOST_CMAKE=ON -D DD4HEP_USE_LCIO=ON -D BUILD_TESTING=ON -D Geant4_DIR=$G4INSTALL/lib64/Geant4-10.2.2 -D DD4HEP_USE_CXX11=ON -DCMAKE_BUILD_TYPE=Debug ..        
+    - cmake -GNinja -D DD4HEP_USE_GEANT4=ON -D DD4HEP_USE_BOOST=ON -DBoost_NO_BOOST_CMAKE=ON -D DD4HEP_USE_LCIO=ON -D BUILD_TESTING=ON -D Geant4_DIR=$G4INSTALL/lib64/Geant4-10.2.2 -D DD4HEP_USE_CXX11=ON -DCMAKE_BUILD_TYPE=Debug -DDD4HEP_USE_XERCESC=ON ..        
     - ninja
     - ninja install
     - . ../bin/thisdd4hep.sh
@@ -60,7 +60,7 @@ centos7-gcc49:
     - source .gitlab-ci.d/init_x86_64.sh
     - mkdir build 
     - cd build
-    - cmake -GNinja -D DD4HEP_USE_GEANT4=ON -D DD4HEP_USE_BOOST=ON -DBoost_NO_BOOST_CMAKE=ON -D DD4HEP_USE_LCIO=ON -D BUILD_TESTING=ON -D Geant4_DIR=$G4INSTALL/lib64/Geant4-10.2.2 -D DD4HEP_USE_CXX11=ON -DCMAKE_BUILD_TYPE=Debug ..        
+    - cmake -GNinja -D DD4HEP_USE_GEANT4=ON -D DD4HEP_USE_BOOST=ON -DBoost_NO_BOOST_CMAKE=ON -D DD4HEP_USE_LCIO=ON -D BUILD_TESTING=ON -D Geant4_DIR=$G4INSTALL/lib64/Geant4-10.2.2 -D DD4HEP_USE_CXX11=ON -DCMAKE_BUILD_TYPE=Debug -DDD4HEP_USE_XERCESC=ON ..        
     - ninja
     - ninja install
     - . ../bin/thisdd4hep.sh