diff --git a/.github/settings.yml b/.github/settings.yml
index 73eace40..e7e9fdec 100644
--- a/.github/settings.yml
+++ b/.github/settings.yml
@@ -14,13 +14,10 @@ branches:
         required_approving_review_count: 1
       required_status_checks:
         contexts:
-          - "Code Coverage (7.3, locked)"
-          - "Coding Standards (7.3, locked)"
-          - "Dependency Analysis (7.3, locked)"
-          - "Static Code Analysis (7.3, locked)"
-          - "Tests (7.3, highest)"
-          - "Tests (7.3, locked)"
-          - "Tests (7.3, lowest)"
+          - "Code Coverage (7.4, locked)"
+          - "Coding Standards (7.4, locked)"
+          - "Dependency Analysis (7.4, locked)"
+          - "Static Code Analysis (7.4, locked)"
           - "Tests (7.4, highest)"
           - "Tests (7.4, locked)"
           - "Tests (7.4, lowest)"
diff --git a/.github/workflows/integrate.yaml b/.github/workflows/integrate.yaml
index 8e5311c1..9f4da96b 100644
--- a/.github/workflows/integrate.yaml
+++ b/.github/workflows/integrate.yaml
@@ -22,7 +22,7 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "7.3"
+          - "7.4"
 
         dependencies:
           - "locked"
@@ -72,7 +72,7 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "7.3"
+          - "7.4"
 
         dependencies:
           - "locked"
@@ -137,7 +137,7 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "7.3"
+          - "7.4"
 
         dependencies:
           - "locked"
@@ -179,7 +179,7 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "7.3"
+          - "7.4"
 
         dependencies:
           - "locked"
@@ -231,7 +231,6 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "7.3"
           - "7.4"
           - "8.0"
           - "8.1"
diff --git a/.github/workflows/renew.yaml b/.github/workflows/renew.yaml
index 7758d5b3..90895d1d 100644
--- a/.github/workflows/renew.yaml
+++ b/.github/workflows/renew.yaml
@@ -18,7 +18,7 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "7.3"
+          - "7.4"
 
         dependencies:
           - "locked"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f8d8621b..d57466c2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ For a full diff see [`1.0.3...main`][1.0.3...main].
 ### Changed
 
 - Dropped support for PHP 7.2 ([#564]), by [@dependabot]
+- Dropped support for PHP 7.3 ([#573]), by [@dependabot]
 
 ### Fixed
 
@@ -421,6 +422,7 @@ For a full diff see [`5d8b3e2...0.1.0`][5d8b3e2...0.1.0].
 [#463]: https://github.com/ergebnis/json-normalizer/pull/463
 [#517]: https://github.com/ergebnis/json-normalizer/pull/517
 [#564]: https://github.com/ergebnis/json-normalizer/pull/564
+[#573]: https://github.com/ergebnis/json-normalizer/pull/573
 
 [@BackEndTea]: https://github.com/BackEndTea
 [@dependabot]: https://github.com/dependabot
diff --git a/composer.json b/composer.json
index dc208e2c..90b324c3 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
     "source": "https://github.com/ergebnis/json-normalizer"
   },
   "require": {
-    "php": "^7.3 || ^8.0",
+    "php": "^7.4 || ^8.0",
     "ext-json": "*",
     "ergebnis/json-printer": "^3.1.1",
     "justinrainbow/json-schema": "^5.2.11"
@@ -48,7 +48,7 @@
       "phpstan/extension-installer": true
     },
     "platform": {
-      "php": "7.3.32"
+      "php": "7.4.26"
     },
     "preferred-install": "dist",
     "sort-packages": true
diff --git a/composer.lock b/composer.lock
index 4f9ec827..3eed901e 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": "18bcd436450d01db5f6daa07de41189e",
+    "content-hash": "8d2090c49daf0ed952149ea1c01f18ab",
     "packages": [
         {
             "name": "ergebnis/json-printer",
@@ -5308,12 +5308,12 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "^7.3 || ^8.0",
+        "php": "^7.4 || ^8.0",
         "ext-json": "*"
     },
     "platform-dev": [],
     "platform-overrides": {
-        "php": "7.3.32"
+        "php": "7.4.26"
     },
-    "plugin-api-version": "2.1.0"
+    "plugin-api-version": "2.2.0"
 }