diff --git a/.travis.yml b/.travis.yml
index da81aae..c01f254 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,15 +2,15 @@ language: node_js
 node_js:
   - 13
 script:
-  - npm install -g ajv-cli
-  - ajv -s xarf.schema.json -d "samples/positive/**/*.json" -r "schemas/**/*.schema.json"
+  - npm install -g ajv-cli ajv-formats
+  - ajv -c ajv-formats -s xarf.schema.json -d "samples/positive/**/*.json" -r "schemas/**/*.schema.json"
   - yarn install --frozen-lockfile
   - prettier --check .
   - eslint .
   - yarn test-xarf
   - yarn bundle-xarf
-  - ajv -s xarf_bundled.schema.json -d "samples/positive/**/*.json"
-  - ajv -s xarf_deref.schema.json -d "samples/positive/**/*.json"
+  - ajv -c ajv-formats -s xarf_bundled.schema.json -d "samples/positive/**/*.json"
+  - ajv -c ajv-formats -s xarf_deref.schema.json -d "samples/positive/**/*.json"
 after_success: yarn report-coverage-coveralls
 
 deploy: