diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 834ac3da01b553d26a89b0d2fb9f13360cddef82..09ad8dc6c24240072b6f0f3a431cd8d1b70864c0 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -70,6 +70,8 @@ Build_Windows:
 Build_Linux:
     only: ['web', 'schedules']
     extends: .Build_Linux_
+    # override image from base script as there is no official 4.26 image
+    image: registry.git-ce.rwth-aachen.de/vr-vis/vr-group/unreal-development/unreal-docker-ci-images/4-26_linux
     tags:
         - linux
         - unreal