diff --git a/.github/workflows/code-checks.yml b/.github/workflows/code-checks.yml
index d3f1030..8d37a3c 100644
--- a/.github/workflows/code-checks.yml
+++ b/.github/workflows/code-checks.yml
@@ -12,7 +12,6 @@ jobs:
     strategy:
       matrix:
         php:
-          - "7.3"
           - "7.4"
           - "8.0"
           - "8.1"
diff --git a/.github/workflows/tagged-release.yml b/.github/workflows/tagged-release.yml
index ee0d3f9..bda070d 100644
--- a/.github/workflows/tagged-release.yml
+++ b/.github/workflows/tagged-release.yml
@@ -16,7 +16,7 @@ jobs:
         - name: Setup PHP
           uses: "shivammathur/setup-php@v2"
           with:
-            php-version: "7.3"
+            php-version: "7.4"
             ini-values: "phar.readonly=0"
 
         - name: Validate composer.json and composer.lock
diff --git a/README.md b/README.md
index d376ba2..91512bb 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ Written by **Armin Vieweg**  <<https://v.ieweg.de>>
 
 ## Requirements
 
-- PHP 7.3, 7.4, 8.0, 8.1 or 8.2
+- PHP 7.4, 8.0, 8.1 or 8.2
 - Enabled PHP extensions: iconv, json
 
 
diff --git a/composer.json b/composer.json
index 958b5f3..83b43ba 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
         "source": "https://github.com/a-r-m-i-n/editorconfig-cli"
     },
     "require": {
-        "php": "^7.3 | ^8.0",
+        "php": "^7.4 | ^8.0",
         "ext-json": "*",
         "ext-iconv": "*",
         "symfony/console": "^4 || ^5 || ^6",
diff --git a/composer.lock b/composer.lock
index 9571b25..c629bc6 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "2bf5f889007c64d3445b3cf504f41e70",
+    "content-hash": "6f331dea21db2412dc7e7ed5889d708c",
     "packages": [
         {
             "name": "idiosyncratic/editorconfig",
@@ -4158,7 +4158,7 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "^7.3 | ^8.0",
+        "php": "^7.4 | ^8.0",
         "ext-json": "*",
         "ext-iconv": "*"
     },