diff --git a/compose-dev-backend.yml b/compose-dev-backend.yml
index 9076d9bb..5e6b852a 100644
--- a/compose-dev-backend.yml
+++ b/compose-dev-backend.yml
@@ -4,7 +4,6 @@
 #
 # build remark42 docker image - docker compose -f compose-dev-backend.yml build
 # start remark42 service - docker compose -f compose-dev-backend.yml up
-version: "2"
 
 services:
   remark42:
diff --git a/compose-dev-frontend.yml b/compose-dev-frontend.yml
index 49d07144..84d90f40 100644
--- a/compose-dev-frontend.yml
+++ b/compose-dev-frontend.yml
@@ -4,7 +4,6 @@
 #
 # build remark42 docker image - docker compose -f compose-dev-frontend.yml build
 # start remark42 service - docker compose -f compose-dev-frontend.yml up
-version: "2"
 
 services:
   remark42:
diff --git a/compose-e2e-test.yml b/compose-e2e-test.yml
index ee3fcf23..130cf593 100644
--- a/compose-e2e-test.yml
+++ b/compose-e2e-test.yml
@@ -1,5 +1,4 @@
 # compose for running e2e tests in CI
-version: "2"
 
 services:
   remark42:
diff --git a/docker-compose.yml b/docker-compose.yml
index adee680d..a9d9222e 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,5 +1,3 @@
-version: "2"
-
 services:
   remark:
     # remove the next line in case you want to use this Docker Compose file separately