diff --git a/Definition-format.md b/Definition-format.md
index ad470d3..0abb15e 100644
--- a/Definition-format.md
+++ b/Definition-format.md
@@ -13,7 +13,7 @@ In general, using cardigann definitions is the preferred way of adding new index
 
 # Schema
 
-To help you conform to YML coding standards, (and maintain compatibility parity with the v7, v8 & v9 Prowlarr yml indexers), you can validate your Jackett yml Indexer by using the npm ajv tool.
+To help you conform to YML coding standards, (and maintain compatibility parity with the v9 Prowlarr yaml indexers), you can validate your Jackett yaml Indexer by using the npm ajv tool.
 
 ## Installation
 The following npm packages are required `ajv-cli-servarr ajv-formats`.