diff --git a/src/anyvar/restapi/_data/openapi.yaml b/src/anyvar/restapi/_data/openapi.yaml
index 02127a5..5eefa52 100644
--- a/src/anyvar/restapi/_data/openapi.yaml
+++ b/src/anyvar/restapi/_data/openapi.yaml
@@ -448,6 +448,7 @@ paths:
           required: true
           schema:
             type: string
+            default: all
             enum:
               - substitution
               - deletion