diff --git a/.travis.yml b/.travis.yml
index 122d81c..e00eb93 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,6 +10,7 @@ php:
   - 7.1
   - 7.2
   - 7.3
+  - 7.4
 
 matrix:
   fast_finish: true
diff --git a/composer.json b/composer.json
index fd3a1ce..fc09115 100644
--- a/composer.json
+++ b/composer.json
@@ -11,13 +11,12 @@
         }
     ],
     "require": {
-        "php": "^7.1.3",
         "ext-dom": "*",
         "phpmentors/stagehand-fsm": "~3.0@dev",
-        "symfony/expression-language": "~3.4|~4.0"
+        "symfony/expression-language": "^4.3|^5.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "~6.5"
+        "phpunit/phpunit": "^7.0"
     },
     "autoload": {
         "psr-4": {