diff --git a/testing/environments/Dockerfile b/testing/environments/Dockerfile
index 0543985dadd3..fb54422975b8 100644
--- a/testing/environments/Dockerfile
+++ b/testing/environments/Dockerfile
@@ -1,7 +1,6 @@
 # Basic debian file with curl, wget and nano installed to fetch files
 # an update config files
 FROM debian:latest
-MAINTAINER Nicolas Ruflin <ruflin@elastic.co>
 
 RUN apt-get update && \
     apt-get install -y curl nano wget zip && \
diff --git a/testing/environments/local.yml b/testing/environments/local.yml
index e35d5c63e232..416c8530d8a1 100644
--- a/testing/environments/local.yml
+++ b/testing/environments/local.yml
@@ -2,7 +2,6 @@
 # This is useful for testing locally with a full elastic stack setup.
 # All services can be reached through localhost like localhost:5601 for Kibana
 # This is not used for CI as otherwise ports conflicts could happen.
-version: '2.3'
 services:
   kibana:
     ports:
diff --git a/testing/environments/snapshot.yml b/testing/environments/snapshot.yml
index 1bf990a27c73..94ede4ae169f 100644
--- a/testing/environments/snapshot.yml
+++ b/testing/environments/snapshot.yml
@@ -1,6 +1,5 @@
 # This should start the environment with the latest snapshots.
 
-version: '2.3'
 services:
   elasticsearch:
     image: docker.elastic.co/elasticsearch/elasticsearch:8.16.0-07587139-SNAPSHOT