Try 8.0snapshot

Author: ddeboer

.travis.yml

@@ -10,6 +10,7 @@ php:
     - 7.2
     - 7.3
     - 7.4
+    - 8.0snapshot
 
 env:
     global:
@@ -26,8 +27,6 @@ matrix:
           env: COMPOSER_FLAGS="--prefer-stable --prefer-lowest"
         - php: 7.4
           env: COMPOSER_FLAGS="--prefer-stable" COVERAGE=true TEST_COMMAND="composer test-ci"
-        - php: 8.0
-          env: COMPOSER_FLAGS="--prefer-stable" TEST_COMMAND="composer test-ci"
 
 before_install:
     - if [[ $COVERAGE != true ]]; then phpenv config-rm xdebug.ini || true; fi