diff --git a/test/defaults b/test/defaults
index 1f5f6379..f5e9fab3 100644
--- a/test/defaults
+++ b/test/defaults
@@ -6,7 +6,7 @@ declare -gA default_composer
 declare -gA latest_composer
 
 # Defaults for scalingo-22:
-default_php["scalingo-22"]="8.1." # This one depends on the semver stable rule configuration
+default_php["scalingo-22"]="8.4." # This one depends on the semver stable rule configuration
 default_nginx["scalingo-22"]="1.28."
 default_composer["scalingo-22"]="2.9."
 latest_composer["scalingo-22"]="2.9.5"
diff --git a/test/fixtures/php-8.1/composer/composer.json b/test/fixtures/php-8.1/composer/composer.json
deleted file mode 100644
index 4df1fcf0..00000000
--- a/test/fixtures/php-8.1/composer/composer.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-    "require": {
-        "php": "~8.1"
-    }
-}
diff --git a/test/fixtures/php-8.1/composer/composer.lock b/test/fixtures/php-8.1/composer/composer.lock
deleted file mode 100644
index 0ae1a5de..00000000
--- a/test/fixtures/php-8.1/composer/composer.lock
+++ /dev/null
@@ -1,20 +0,0 @@
-{
-    "_readme": [
-        "This file locks the dependencies of your project to a known state",
-        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
-        "This file is @generated automatically"
-    ],
-    "content-hash": "d9dfec2d0b542f1d8822ddb04789dc0f",
-    "packages": [],
-    "packages-dev": [],
-    "aliases": [],
-    "minimum-stability": "stable",
-    "stability-flags": [],
-    "prefer-stable": false,
-    "prefer-lowest": false,
-    "platform": {
-        "php": "~8.1"
-    },
-    "platform-dev": [],
-    "plugin-api-version": "2.2.0"
-}
diff --git a/test/fixtures/php-8.1/optional_builtin/composer.json b/test/fixtures/php-8.1/optional_builtin/composer.json
deleted file mode 100644
index 38a1ebb8..00000000
--- a/test/fixtures/php-8.1/optional_builtin/composer.json
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-    "require": {
-        "php": "~8.1",
-        "ext-calendar": "*",
-        "ext-ftp": "*",
-        "ext-gettext": "*",
-        "ext-gmp": "*",
-        "ext-imap": "*",
-        "ext-sodium": "*",
-        "ext-tidy": "*"
-    }
-}
diff --git a/test/fixtures/php-8.1/optional_builtin/composer.lock b/test/fixtures/php-8.1/optional_builtin/composer.lock
deleted file mode 100644
index 963c9619..00000000
--- a/test/fixtures/php-8.1/optional_builtin/composer.lock
+++ /dev/null
@@ -1,27 +0,0 @@
-{
-    "_readme": [
-        "This file locks the dependencies of your project to a known state",
-        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
-        "This file is @generated automatically"
-    ],
-    "content-hash": "6e2f9726d381e20c588c75dc55226220",
-    "packages": [],
-    "packages-dev": [],
-    "aliases": [],
-    "minimum-stability": "stable",
-    "stability-flags": [],
-    "prefer-stable": false,
-    "prefer-lowest": false,
-    "platform": {
-        "php": "~8.1",
-        "ext-calendar": "*",
-        "ext-ftp": "*",
-        "ext-gettext": "*",
-        "ext-gmp": "*",
-        "ext-imap": "*",
-        "ext-sodium": "*",
-        "ext-tidy": "*"
-    },
-    "platform-dev": [],
-    "plugin-api-version": "2.6.0"
-}
diff --git a/test/php81 b/test/php81
deleted file mode 100644
index fda692c1..00000000
--- a/test/php81
+++ /dev/null
@@ -1,76 +0,0 @@
-#!/usr/bin/env bash
-
-readonly default_builtins_extensions_81=(
-	"bcmath" "bz2" "Core" "ctype" "curl" "date" "dom" "exif" "fileinfo"
-	"filter" "gd" "hash" "iconv" "intl" "json" "libxml" "mbstring" "mysqli"
-	"mysqlnd" "openssl" "pcntl" "pcre" "PDO" "pdo_mysql" "pdo_pgsql"
-	"pdo_sqlite" "pgsql" "Phar" "posix" "readline" "Reflection" "session"
-	"shmop" "SimpleXML" "soap" "sockets" "SPL" "sqlite3" "standard" "tokenizer"
-	"xml" "xmlreader" "xmlwriter" "xsl" "Zend OPcache" "zip" "zlib"
-)
-
-readonly default_pecl_extensions_81=(
-	"apcu" "mongodb" "redis"
-)
-
-readonly optional_builtin_extensions_81=(
-	"calendar" "ftp" "gettext" "gmp" "imap" "sodium" "tidy"
-)
-
-test::php81::classic() {
-#
-# Test a deployment of a classic app (not using Composer)
-# Specifying we want PHP 8.1.x via environment
-#
-
-	PHP_VERSION="8.1"
-	export PHP_VERSION
-
-	test::utils::setupFixture "defaults/classic"
-	test::helpers::classic_deploy \
-		"8.1." \
-		"${default_nginx["${STACK}"]}"
-}
-
-test::php81::composer() {
-#
-# Test a deployment of a PHP app using Composer
-# Specifying we want PHP 8.1.x via composer.json
-#
-
-	test::utils::setupFixture "php-8.1/composer"
-	test::helpers::composer_deploy \
-		"8.1." \
-		"${default_nginx["${STACK}"]}" \
-		"${default_composer["${STACK}"]}"
-}
-
-test::php81::extensions::default() {
-#
-# Test the presence of default enabled built-in extensions.
-#
-
-	test::utils::setupFixture "php-8.1/composer"
-
-	test::utils::compile
-	test::helpers::enter_prod
-
-	local extensions=("${default_builtin_extensions_81[@]}")
-	extensions+=("${default_pecl_extensions_81[@]}")
-
-	test::helpers::enabled_extensions "${extensions[@]}"
-}
-
-test::php81::extensions::optional_builtin() {
-#
-# Test the presence of available built-in extensions that are not
-# enabled by default.
-#
-
-	test::utils::setupFixture "php-8.1/optional_builtin"
-
-	test::utils::compile
-	test::helpers::enter_prod
-
-	test::helpers::enabled_extensions "${optional_builtin_extensions_81[@]}"
-}
diff --git a/test/tests b/test/tests
index 02da4d63..14c6f3ae 100755
--- a/test/tests
+++ b/test/tests
@@ -4,7 +4,6 @@ source "$( pwd )/test/utils"
 source "$( pwd )/test/helpers"
 
 source "$( pwd )/test/defaults"
-source "$( pwd )/test/php81"
 source "$( pwd )/test/php82"
 source "$( pwd )/test/php83"
 source "$( pwd )/test/php84"
@@ -19,12 +18,6 @@ source "$( pwd )/test/nginx"
 suite_addTest test::defaults::classic
 suite_addTest test::defaults::composer
 
-# PHP 8.1
-suite_addTest test::php81::classic
-suite_addTest test::php81::composer
-suite_addTest test::php81::extensions::default
-suite_addTest test::php81::extensions::optional_builtin
-
 # PHP 8.2
 suite_addTest test::php82::classic
 suite_addTest test::php82::composer