diff --git a/.gitlab-cb.yml b/.gitlab-cb.yml
index aa0c48ff2..1e4615543 100644
--- a/.gitlab-cb.yml
+++ b/.gitlab-cb.yml
@@ -4,10 +4,14 @@ variables:
 stages:
     - pipeline
 
-include: 'Benchmark/.benchmark_templates.yml'
+include:
+    - 'Benchmark/.benchmark_templates.yml'
+    - 'Benchmark/lock.yml'
 
 pipeline_gen:
     stage: pipeline
+    extends:
+        - .seralize
     tags:
         - testcluster
     before_script:
@@ -25,6 +29,8 @@ pipeline_gen:
 
 pipeline_exec:
     stage: pipeline
+    extends:
+        - .seralize
     trigger:
         include:
             - artifact: pipeline.yml