diff --git a/docker-compose.ci.build.yml b/docker-compose.ci.build.yml
index e941c6ec1..747e8e583 100644
--- a/docker-compose.ci.build.yml
+++ b/docker-compose.ci.build.yml
@@ -1,4 +1,4 @@
-version: '3.3'
+version: '3.4'
 
 services:
   ci-build:
diff --git a/docker-compose.override.yml b/docker-compose.override.yml
index 4f2e31123..4a3ffdd97 100644
--- a/docker-compose.override.yml
+++ b/docker-compose.override.yml
@@ -1,4 +1,4 @@
-version: '3.3'
+version: '3.4'
 
 # The default docker-compose.override file can use the "localhost" as the external name for testing web apps within the same dev machine. 
 # The ESHOP_EXTERNAL_DNS_NAME_OR_IP environment variable is taken, by default, from the ".env" file defined like: 
diff --git a/docker-compose.prod.yml b/docker-compose.prod.yml
index fac480f2e..1be627e76 100644
--- a/docker-compose.prod.yml
+++ b/docker-compose.prod.yml
@@ -1,4 +1,4 @@
-version: '3.3'
+version: '3.4'
 
 # The Production docker-compose file has to have the external/real IPs or DNS names for the services 
 # The ESHOP_PROD_EXTERNAL_DNS_NAME_OR_IP environment variable is taken, by default, from the ".env" file defined like: 
diff --git a/docker-compose.yml b/docker-compose.yml
index b237ad04f..f6f59db25 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,4 +1,4 @@
-version: '3.3'
+version: '3.4'
 
 services: