Update .travis.yml

bolechen · web-flow · commit 4c9b0697db48 · 2020-10-06T12:24:13.000+08:00
diff --git a/.travis.yml b/.travis.yml
@@ -4,6 +4,7 @@ php:
   - 7.1
   - 7.2
   - 7.3
+  - 7.4
 
 install:
   - travis_retry composer install --no-interaction
