diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b7477a105d0167326c39b77672f90feeaf9e7590..00ce664b3160494df015f766ce1ecc3f650fdc22 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -51,3 +51,5 @@ deploy-webserver:
     - cd ansible
     - whoami
     - ansible-playbook -vvv -i ./hosts_deploy deploy.yaml --extra-vars "deploy_user_name=ippidb repo_api_token=JZS-4cH7bWkFkHa2rAVf marvin_license_b64=$MARVINJS_LICENSE"
+  only:
+    - master
\ No newline at end of file
diff --git a/ansible/deploy.yaml b/ansible/deploy.yaml
index bfb84fd136cea57d67c3b543d51605985aea676b..28d42ef2b9f8b550073800c8ca62dccb14248bdf 100644
--- a/ansible/deploy.yaml
+++ b/ansible/deploy.yaml
@@ -50,10 +50,10 @@
     - name: Install RPMs for openbabel.
       yum:
          name: 
-           - https://gitlab.pasteur.fr/hub/openbabel4ippidb/raw/master/rpmbuild/RPMS/x86_64/openbabel-libs-2.4.1-15.PR1829.py3.el7.x86_64.rpm
-           - https://gitlab.pasteur.fr/hub/openbabel4ippidb/raw/master/rpmbuild/RPMS/x86_64/openbabel-2.4.1-15.PR1829.py3.el7.x86_64.rpm
-           - https://gitlab.pasteur.fr/hub/openbabel4ippidb/raw/master/rpmbuild/RPMS/x86_64/openbabel-devel-2.4.1-15.PR1829.py3.el7.x86_64.rpm
-           - https://gitlab.pasteur.fr/hub/openbabel4ippidb/raw/master/rpmbuild/RPMS/x86_64/python3-openbabel-2.4.1-15.PR1829.py3.el7.x86_64.rpm
+           - https://gitlab.pasteur.fr/hub/openbabel4ippidb/raw/master/rpmbuild/RPMS/x86_64/openbabel-libs-2.4.1-15.PR1902.py3.el7.x86_64.rpm
+           - https://gitlab.pasteur.fr/hub/openbabel4ippidb/raw/master/rpmbuild/RPMS/x86_64/openbabel-2.4.1-15.PR1902.py3.el7.x86_64.rpm
+           - https://gitlab.pasteur.fr/hub/openbabel4ippidb/raw/master/rpmbuild/RPMS/x86_64/openbabel-devel-2.4.1-15.PR1902.py3.el7.x86_64.rpm
+           - https://gitlab.pasteur.fr/hub/openbabel4ippidb/raw/master/rpmbuild/RPMS/x86_64/python3-openbabel-2.4.1-15.PR1902.py3.el7.x86_64.rpm
          state: present
     - name: install graphviz-devel
       yum: name=graphviz-devel state=present update_cache=yes
@@ -124,25 +124,33 @@
         command: "collectstatic"
         app_path: "/home/{{ deploy_user_name }}/ippidb-web/ippisite"
         settings: "ippisite.{{ ansible_hostname }}_settings"
+      environment:
+        BABEL_LIBDIR: '/usr/lib64/openbabel/'
     - name: create mod_wsgi configuration
       django_manage:
         command: "runmodwsgi --setup-only --port=80 --user ippidb --group wheel --server-root=/etc/ippidb-80"
         app_path: "/home/{{ deploy_user_name }}/ippidb-web/ippisite"
         settings: "ippisite.{{ ansible_hostname }}_settings"
-    - name: add line in generated WSGI handler script to set DJANGO_SETTINGS_MODULE
+      environment:
+        BABEL_LIBDIR: '/usr/lib64/openbabel/'
+    - name: add line in generated WSGI handler script to set DJANGO_SETTINGS_MODULE and BABEL_LIBDIR for openbabel formats
       blockinfile:
         path: /etc/ippidb-80/handler.wsgi
         insertbefore: BOF
         content: |
           # added by ansible deployment script to use the right django settings file
+          # and set correctly the openbabel formats directory
           import os
           os.environ['DJANGO_SETTINGS_MODULE'] = 'ippisite.hub16_settings'
+          os.environ['BABEL_LIBDIR'] = '/usr/lib64/openbabel/'
     - name: create or update database
       become_user: "{{ deploy_user_name }}"
       django_manage:
         command: "migrate"
         app_path: "/home/{{ deploy_user_name }}/ippidb-web/ippisite"
         settings: "ippisite.{{ ansible_hostname }}_settings"
+      environment:
+        BABEL_LIBDIR: '/usr/lib64/openbabel/'
     # FIXME: this should obviously be removed before switching to prod. env.
     - name: install passlib for htpasswd in ansible
       yum: name=python-passlib state=installed
diff --git a/ippisite/requirements-core.txt b/ippisite/requirements-core.txt
index 66c297d17abd88bea0e088a0f675f1c463a81e56..6d8bbdcc121fe433746260371af23f995ed54760 100644
--- a/ippisite/requirements-core.txt
+++ b/ippisite/requirements-core.txt
@@ -6,6 +6,8 @@ django-extensions
 django-formtools
 django-debug-toolbar
 django-allauth
+# import scripts
+pandas==0.22.0
 # web services
 bioservices
 bioblend