diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6c3593f..126065b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,9 +9,6 @@ jobs:
     strategy:
       matrix:
         include:
-          - operating-system: 'ubuntu-latest'
-            php-version: '7.0'
-
           - operating-system: 'ubuntu-latest'
             php-version: '7.1'
 
diff --git a/composer.json b/composer.json
index 4432030..710bcbe 100644
--- a/composer.json
+++ b/composer.json
@@ -34,7 +34,7 @@
         }
     ],
     "require": {
-        "php": ">=7.0",
+        "php": ">=7.1",
         "ext-json": "*",
         "amphp/amp": "^2",
         "amphp/byte-stream": "^1.1",