diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 22758b2128be81ae6316de961a630a2e68cd3388..1ca34cab32ac4751c6c0d4e1bda4b70b87655b5f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -92,9 +92,9 @@ stages:
 ############ LICENSE HEADERS ############
 license_headers:
   stage: license
-  image: labrobotica/wolf_deps:16.04
+  image: labrobotica/wolf_deps:20.04
   cache:
-    - key: wolf-xenial
+    - key: wolf-focal
       paths:
       - ci_deps/wolf/
   except:
@@ -105,22 +105,6 @@ license_headers:
   script:
     - *license_header_definition
 
-############ UBUNTU 16.04 TESTS ############
-build_and_test:xenial:
-  stage: build_and_test
-  image: labrobotica/wolf_deps:16.04
-  cache:
-    - key: wolf-xenial
-      paths:
-      - ci_deps/wolf/
-  except:
-    - master
-  before_script:
-    - *preliminaries_definition
-    - *install_wolf_definition
-  script:
-    - *build_and_test_definition
-
 ############ UBUNTU 18.04 TESTS ############
 build_and_test:bionic:
   stage: build_and_test