diff --git a/meta-schemas/core.yaml b/meta-schemas/core.yaml
index 1d5b6873..72970dd0 100644
--- a/meta-schemas/core.yaml
+++ b/meta-schemas/core.yaml
@@ -61,6 +61,7 @@ definitions:
             - minimum
             - maxItems
             - maximum
+            - not
             - oneOf
             - pattern
             - patternProperties