try this

.github/workflows/validate.yml

@@ -19,22 +19,22 @@ jobs:
       - uses: actions/checkout@v3
         name: Check out repository # the `name` field is optional for steps
 
-      - uses: readmeio/rdme@v8
+      - uses: readmeio/rdme@v9
         name: Validate 2.0 (json)
         with:
           # See our `rdme` docs for more GitHub Actions usage examples:
           # https://docs.readme.com/docs/rdme
           rdme: openapi:validate 2.0/json/petstore.json
 
-      - uses: readmeio/rdme@v8
+      - uses: readmeio/rdme@kanad-test-git-ref-do-not-use
         name: Validate 2.0 (yaml)
         with:
           rdme: openapi:validate 2.0/yaml/petstore.yaml
 
-      - uses: readmeio/rdme@v8
+      - uses: readmeio/rdme@v9
         name: Validate 3.0 (json)
         with:
-          rdme: openapi:validate 3.0/json/petstore.json
+          rdme: openapi validate 3.0/json/petstore.json
 
       - uses: readmeio/rdme@v8
         name: Validate 3.0 (yaml)