diff --git a/schema/compose-spec.json b/schema/compose-spec.json
index 6f827971..ac3eafbe 100644
--- a/schema/compose-spec.json
+++ b/schema/compose-spec.json
@@ -181,6 +181,7 @@
                   "type": "object",
                   "additionalProperties": false,
                   "properties": {
+                    "restart": {"type": "boolean"},
                     "condition": {
                       "type": "string",
                       "enum": ["service_started", "service_healthy", "service_completed_successfully"]