diff --git a/core/tests/compose_fixtures/basic/docker-compose.yaml b/core/tests/compose_fixtures/basic/docker-compose.yaml
index ff3f74220..f6fd6a2a1 100644
--- a/core/tests/compose_fixtures/basic/docker-compose.yaml
+++ b/core/tests/compose_fixtures/basic/docker-compose.yaml
@@ -1,5 +1,3 @@
-version: '3.0'
-
 services:
   alpine:
     image: alpine:latest
diff --git a/core/tests/compose_fixtures/port_multiple/compose.yaml b/core/tests/compose_fixtures/port_multiple/compose.yaml
index 65717fc4a..e8e147bbd 100644
--- a/core/tests/compose_fixtures/port_multiple/compose.yaml
+++ b/core/tests/compose_fixtures/port_multiple/compose.yaml
@@ -1,5 +1,3 @@
-version: '3.0'
-
 services:
   alpine:
     image: nginx:alpine-slim
diff --git a/core/tests/compose_fixtures/port_single/compose.yaml b/core/tests/compose_fixtures/port_single/compose.yaml
index d1bf9eb45..88c19ab61 100644
--- a/core/tests/compose_fixtures/port_single/compose.yaml
+++ b/core/tests/compose_fixtures/port_single/compose.yaml
@@ -1,5 +1,3 @@
-version: '3.0'
-
 services:
   alpine:
     image: nginx:alpine-slim