diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 668edc4cf56b05846af4e7ac0bc183dc689582b9..3678a614eabbcac1dcdcc517fbe5b99964350113 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,6 +1,6 @@
 before_script:
     #pre-installation script
-    - yum install make glibc-devel -y
+    - yum install make glibc-devel openmotif-devel -y
 
 slc6-gcc48:
   tags:
@@ -11,7 +11,7 @@ slc6-gcc48:
     - mkdir build 
     - cd build
     - cmake -D DD4HEP_USE_GEANT4=ON -D DD4HEP_USE_BOOST=ON -DBoost_NO_BOOST_CMAKE=ON -D DD4HEP_USE_LCIO=ON -D BUILD_TESTING=ON -DCLHEP_DIR=$CLHEP -D Geant4_DIR=$G4INSTALL/lib64/Geant4-10.1.2 ..
-    - make
+    - make -j4
     - make install
 
 
@@ -24,5 +24,5 @@ slc6-gcc49:
     - mkdir build 
     - cd build
     - cmake -D DD4HEP_USE_GEANT4=ON -D DD4HEP_USE_BOOST=ON -DBoost_NO_BOOST_CMAKE=ON -D DD4HEP_USE_LCIO=ON -D BUILD_TESTING=ON -DCLHEP_DIR=$CLHEP -D Geant4_DIR=$G4INSTALL/lib64/Geant4-10.1.2 ..
-    - make
+    - make -j4
     - make install