diff --git a/.travis.yml b/.travis.yml
index 120f9cf..902ce83 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,7 @@
 language: php
 
 php:
+  - 7.1
   - 7.2
   - 7.3
 
diff --git a/composer.json b/composer.json
index 0863bf3..de43e8e 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
     "name": "php-deal/framework",
     "description": "Design by Contract framework for PHP",
     "require": {
-        "php": "^7.2",
+        "php": "~7.1",
         "goaop/framework": "^2.3"
     },
     "require-dev": {
@@ -12,7 +12,7 @@
         "roave/security-advisories": "dev-master",
         "slevomat/coding-standard": "^4.8",
         "squizlabs/php_codesniffer": "^3.4",
-        "symfony/console": "~2.7|~3.0|~4.0"
+        "symfony/console": "~3.0|~4.0"
     },
     "license": "MIT",
     "authors": [