diff --git a/.circleci/config.yml b/.circleci/config.yml
index 6e9175831..0d3875799 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -2,7 +2,7 @@ version: 2
 jobs:
   build:
     docker:
-    - image: circleci/php:7.4-cli
+    - image: circleci/php:8.1-cli
     steps:
     - run:
         name: Switch timezone to Europe/Paris
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 695705a1a..4042f0caf 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -1,7 +1,7 @@
 name: 'Release'
 
 env:
-  PHP_VERSION: '7.4'
+  PHP_VERSION: '8.1'
 
 on:
   release:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 71fec1a71..1f2a1bc1a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -28,33 +28,33 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        php: ['7.4', '8.0', '8.1', '8.2']
+        php: ['8.1', '8.2', '8.3']
         coverage: [false]
         experimental: [false]
         profiling: [false]
         exclude:
         # excluded for code coverage
         - os: 'ubuntu-latest'
-          php: '7.4'
+          php: '8.1'
           coverage: false
           profiling: false
           experimental: false
         include:
         # code coverage
         - os: 'ubuntu-latest'
-          php: '7.4'
+          php: '8.1'
           coverage: true
           profiling: false
           experimental: false
         # code profiling
         - os: 'ubuntu-latest'
-          php: '8.1'
+          php: '8.2'
           coverage: false
           profiling: true
           experimental: false
-        # PHP 8.2 JIT experimental
+        # experimental
         - os: 'ubuntu-latest'
-          php: '8.2'
+          php: '8.3'
           coverage: false
           profiling: false
           experimental: true
diff --git a/.scrutinizer.yml b/.scrutinizer.yml
index 61356a72a..b91e81b06 100644
--- a/.scrutinizer.yml
+++ b/.scrutinizer.yml
@@ -37,8 +37,8 @@ build:
   environment:
     timezone: 'Europe/Paris'
     php:
-      version: 7.4
-      compile_options: '--with-config-file-path=/home/scrutinizer/.phpenv/versions/7.4.27/etc --with-config-file-scan-dir=/home/scrutinizer/.phpenv/versions/7.4.27/etc/conf.d --prefix=/home/scrutinizer/.phpenv/versions/7.4.27 --libexecdir=/home/scrutinizer/.phpenv/versions/7.4.27/libexec --enable-intl --with-openssl --with-gd --enable-gd --with-jpeg-dir=/usr --with-png-dir=/usr --with-freetype-dir=/usr --enable-exif --with-libzip --with-zlib --with-zlib-dir=/usr --enable-xmlreader --with-xsl --enable-pcntl --with-readline --enable-mbstring --with-curl --with-gettext --with-bz2 --enable-bcmath --with-libdir=lib --with-pear=/home/scrutinizer/.phpenv/versions/7.4.27/pear --with-webp-dir=/usr -with-vpx-dir=/usr'
+      version: 8.1
+      #compile_options: '--with-config-file-path=/home/scrutinizer/.phpenv/versions/7.4.27/etc --with-config-file-scan-dir=/home/scrutinizer/.phpenv/versions/7.4.27/etc/conf.d --prefix=/home/scrutinizer/.phpenv/versions/7.4.27 --libexecdir=/home/scrutinizer/.phpenv/versions/7.4.27/libexec --enable-intl --with-openssl --with-gd --enable-gd --with-jpeg-dir=/usr --with-png-dir=/usr --with-freetype-dir=/usr --enable-exif --with-libzip --with-zlib --with-zlib-dir=/usr --enable-xmlreader --with-xsl --enable-pcntl --with-readline --enable-mbstring --with-curl --with-gettext --with-bz2 --enable-bcmath --with-libdir=lib --with-pear=/home/scrutinizer/.phpenv/versions/7.4.27/pear --with-webp-dir=/usr -with-vpx-dir=/usr'
   nodes:
     analysis:
       #requires:
diff --git a/.styleci.yml b/.styleci.yml
index a655eacc6..bbf7fe4d9 100644
--- a/.styleci.yml
+++ b/.styleci.yml
@@ -1,5 +1,5 @@
 risky: false
-version: 7.4
+version: 8.1
 preset: psr12
 tab-width: 4
 use-tabs: false
diff --git a/.symfony.insight.yaml b/.symfony.insight.yaml
index 08254fb89..13115b04a 100644
--- a/.symfony.insight.yaml
+++ b/.symfony.insight.yaml
@@ -1,4 +1,4 @@
-php_version: 7.4
+php_version: 8.1
 commit_failure_conditions:
     - "project.severity.critical > 0"
 exclude_patterns:
diff --git a/README.md b/README.md
index 7b930dafb..a9e4b4f50 100644
--- a/README.md
+++ b/README.md
@@ -51,7 +51,7 @@ mv cecil.phar /usr/local/bin/cecil
 chmod +x /usr/local/bin/cecil
 ```
 
-> [PHP](https://www.php.net) 7.4+ is required.
+> [PHP](https://www.php.net) 8.1+ is required.
 
 ## Usage