diff --git a/compose.override.yaml b/compose.override.yaml
index 9502154..5f141b1 100644
--- a/compose.override.yaml
+++ b/compose.override.yaml
@@ -1,5 +1,3 @@
-version: "3.4"
-
 # Development environment override
 services:
   php:
diff --git a/compose.prod.yaml b/compose.prod.yaml
index c8cfb06..f0db05d 100644
--- a/compose.prod.yaml
+++ b/compose.prod.yaml
@@ -1,5 +1,3 @@
-version: "3.4"
-
 # Production environment override
 services:
   php:
diff --git a/compose.yaml b/compose.yaml
index 3d22dff..43a0790 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -1,5 +1,3 @@
-version: "3.4"
-
 services:
   php:
     image: ${IMAGES_PREFIX:-}app-php