diff --git a/bin/compose-core b/bin/compose-core
index 448e901..204d7ef 100755
--- a/bin/compose-core
+++ b/bin/compose-core
@@ -1283,7 +1283,7 @@ get_docker_compose () {
         return 1
     }
 
-    base_v2="version: '2.0'"
+    base_v2="version: '2.1'"
     merge_yaml_str "$(yaml_key_val_str "services" "$docker_compose_services")" \
                    "$base_v2" > "$cache_file" || return 1