diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index cf39576ebf5665d59f78e6a2b3f114337106f3fd..604907a3f8e499ebae52c611bf54a9daeb46ec7a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -95,10 +95,9 @@ test:centos7.3:
     - module load Eigen/3.2.8-goolf-1.7.20
     - module load numpy/1.10.1-goolf-1.7.20-Python-2.7.11
     - module load Boost/1.53.0-goolf-1.7.20
+    - module load OpenMM/6.1-Linux64
     - module load PyQt/4.11.4-goolf-1.7.20-Python-2.7.11
-    - module load LibTIFF/4.0.3-goolf-1.4.10
-    - module load libpng/1.6.17-goolf-1.4.10
-    - module load zlib/1.2.8-goolf-1.4.10
+    - module load LibTIFF/.4.0.4-goolf-1.7.20
     - module load Perl/5.22.2-goolf-1.7.20
     - module load HH-suite/2.0.16-goolf-1.4.10-Boost-1.53.0
     - echo "... done running centos7.3 'before_script'."
@@ -107,7 +106,11 @@ test:centos7.3:
   - echo "    Building OST..."
   - mkdir build-ci
   - cd build-ci
-  - cmake .. -DCOMPILE_TMTOOLS=1
+  - cmake .. -DENABLE_MM=1
+             -DOPEN_MM_LIBRARY=$EBROOTOPENMM/lib/libOpenMM.so
+             -DOPEN_MM_PLUGIN_DIR=$EBROOTOPENMM/lib/plugins
+             -DOPEN_MM_INCLUDE_DIR=$EBROOTOPENMM/include
+             -DCOMPILE_TMTOOLS=1
              -DENABLE_GFX=OFF
              -DENABLE_GUI=OFF
              -DUSE_NUMPY=1