diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 46dfee2d91896a43a224a653e37f315d83fe3722..077d37acdb368f0e7cd6dd9e79476ac6347c0d06 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -110,68 +110,12 @@ stages:
 ############ LICENSE HEADERS ############
 license_headers:
   stage: license
-  image: labrobotica/wolf_deps:16.04
+  image: labrobotica/wolf_deps:20.04
   before_script:
     - *preliminaries_definition
   script:
     - *license_header_definition
 
-############ UBUNTU 16.04 TESTS ############
-build_and_test_none:xenial:
-  stage: none
-  image: labrobotica/wolf_deps:16.04
-  before_script:
-    - *preliminaries_definition
-    - ldconfig # update links (shared libraries)
-  script:
-    - *build_and_test_definition
-
-build_and_test_csm:xenial:
-  stage: csm
-  image: labrobotica/wolf_deps:16.04
-  cache:
-    - key: csm-xenial
-      paths:
-      - ${CI_PROJECT_DIR}/ci_deps/csm/
-  before_script:
-    - *preliminaries_definition
-    - *install_csm_definition
-    - ldconfig # update links (shared libraries)
-  script:
-    - *build_and_test_definition
-
-build_and_test_falko:xenial:
-  stage: falko
-  image: labrobotica/wolf_deps:16.04
-  cache:
-    - key: falko-xenial
-      paths:
-      - ${CI_PROJECT_DIR}/ci_deps/falkolib/
-  before_script:
-    - *preliminaries_definition
-    - *install_falko_definition
-    - ldconfig # update links (shared libraries)
-  script:
-    - *build_and_test_definition
-    
-build_and_test_csm_falko:xenial:
-  stage: csm_falko
-  image: labrobotica/wolf_deps:16.04
-  cache:
-    - key: csm-xenial
-      paths:
-      - ${CI_PROJECT_DIR}/ci_deps/csm/
-    - key: falko-xenial
-      paths:
-      - ${CI_PROJECT_DIR}/ci_deps/falkolib/
-  before_script:
-    - *preliminaries_definition
-    - *install_falko_definition
-    - *install_csm_definition
-    - ldconfig # update links (shared libraries)
-  script:
-    - *build_and_test_definition
-
 ############ UBUNTU 18.04 TESTS ############
 build_and_test_none:bionic:
   stage: none