diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4fdb50c0db4b127f053997d4a70a8f240fd999b3..2a36c525b64d67a123c8d9b9b419ee1591946371 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -28,12 +28,6 @@ before_script: &before
              }
     EOT
 
-dune:2.6 gcc:
-  image: registry.dune-project.org/docker/ci/dune:2.6-debian-10-gcc-8-17
-  script: duneci-standard-test
-  variables:
-    DUNECI_BRANCH: releases/2.6-1
-
 dune:2.7 gcc:
   image: registry.dune-project.org/docker/ci/dune:2.7-debian-10-gcc-8-17
   before_script: