diff --git a/jsonschema-core.xml b/jsonschema-core.xml
index c8fc6123..b1055ffb 100644
--- a/jsonschema-core.xml
+++ b/jsonschema-core.xml
@@ -4148,7 +4148,7 @@ https://example.com/schemas/common#/$defs/allOf/1
   "properties": {
     "minDate": {
       "type": "string",
-      "pattern": "\d\d\d\d-\d\d-\d\d",
+      "pattern": "\\d\\d\\d\\d-\\d\\d-\\d\\d",
       "format": "date",
     }
   }