diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index a72829ed..e45c7726 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -17,23 +17,20 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "5.3"
-          - "5.4"
-          - "5.5"
-          - "5.6"
-          - "7.0"
-          - "7.1"
           - "7.2"
           - "7.3"
           - "7.4"
-#          - "8.0"
+          - "8.0"
+          - "8.1"
+          - "8.2"
+          - "8.3"
         dependencies: [highest]
         experimental: [false]
         include:
-          - php-version: "5.3"
+          - php-version: "7.2"
             dependencies: highest
             experimental: false
-          - php-version: "5.3"
+          - php-version: "7.2"
             dependencies: lowest
             experimental: false
 #          - php-version: "8.0"
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index d61f8c46..e16034f2 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "5.3"
+          - "7.2"
           - "latest"
 
     steps:
diff --git a/composer.json b/composer.json
index 827cff0d..15442d78 100644
--- a/composer.json
+++ b/composer.json
@@ -27,7 +27,7 @@
         }
     ],
     "require": {
-        "php": ">=5.3.3",
+        "php": "^7.2 || ^8.0",
         "marc-mabe/php-enum":"^2.0 || ^3.0 || ^4.0",
         "icecave/parity": "1.0.0"
     },