diff --git a/core/tests/compose_fixtures/basic/docker-compose.yaml b/core/tests/compose_fixtures/basic/docker-compose.yaml
index ff3f7422..f6fd6a2a 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 65717fc4..e8e147bb 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 d1bf9eb4..88c19ab6 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