diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index bba24f1..a142c79 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -12,7 +12,7 @@ jobs:
     name: Run unit tests
     strategy:
       matrix:
-        php: [ "8.0", "8.1", "8.2" ]
+        php: [ "8.1", "8.2", "8.3" ]
         phpunit: [ "9.5.10" ]
 
     steps:
diff --git a/.github/workflows/pre-release.yml b/.github/workflows/pre-release.yml
index 0120b94..8a6403e 100644
--- a/.github/workflows/pre-release.yml
+++ b/.github/workflows/pre-release.yml
@@ -10,7 +10,7 @@ jobs:
     name: Run unit tests
     strategy:
       matrix:
-        php: [ "8.0", "8.1", "8.2" ]
+        php: [ "8.1", "8.2", "8.3" ]
         phpunit: [ "9.5.10" ]
 
     steps:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 9192a63..1aeaa14 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -11,7 +11,7 @@ jobs:
     name: Run unit tests
     strategy:
       matrix:
-        php: [ "8.0", "8.1", "8.2" ]
+        php: [ "8.1", "8.2", "8.3" ]
         phpunit: [ "9.5.10" ]
 
     steps:
diff --git a/README.md b/README.md
index 32569d3..9bae175 100644
--- a/README.md
+++ b/README.md
@@ -4,8 +4,8 @@ Next Active Directory Integration allows WordPress to authenticate, authorize, c
 If you like this plug-in we'd like to encourage you to purchase a support plan from [https://active-directory-wp.com/](https://active-directory-wp.com/shop-overview/) to support the ongoing development of this plug-in.
 
 ## Important requirement changes
-NADI requires PHP 8.0 or later. The reason is that security support for PHP version prior 8.x have been dropped by the maintainers as you can see in the official [PHP documentation](http://php.net/supported-versions.php).
-For security reasons and in order to use NADI in 2023 we hereby politely encourage you to migrate your environments to at least PHP 8.0.
+NADI requires PHP 8.1 or later. The reason is that security support for PHP version prior 8.1 have been dropped by the maintainers as you can see in the official [PHP documentation](http://php.net/supported-versions.php).
+For security reasons and in order to use NADI in 2024 we hereby politely encourage you to migrate your environments to at least PHP 8.1.
 
 Thank you all for your support and understanding.
 
diff --git a/readme.txt b/readme.txt
index 7846676..07fa690 100644
--- a/readme.txt
+++ b/readme.txt
@@ -53,7 +53,7 @@ As an owner of a valid support plan you have access to the following premium ext
 = Requirements =
 
 * WordPress since 5.6
-* PHP >= 8.0
+* PHP >= 8.1
 * LDAP support
 * OpenSSL Support for TLS (recommended)
 
@@ -81,7 +81,7 @@ Please read the [FAQ](https://www.active-directory-wp.com/docs/FAQ.html) of our
 == Installation ==
 
 = Requirements =
-To install Next Active Directory Integration you need at least WordPress 5.6 and PHP 8.0.
+To install Next Active Directory Integration you need at least WordPress 5.6 and PHP 8.1.
 
 Although only tested with Apache 2.2 and 2.4 *NADI* should work with all other common web servers like nginx and IIS.
 
@@ -93,8 +93,8 @@ Next Active Directory Integration requires a few PHP modules to be enabled. Plea
 
 = Important =
 
-NADI requires PHP 8.0 or later. The reason is that security support for PHP version prior 8.x have been dropped by the maintainers as you can see in the official PHP documentation http://php.net/supported-versions.php.
-For security reasons and in order to use NADI in 2023 we hereby politely encourage you to migrate your environments to at least PHP 8.0 until then.
+NADI requires PHP 8.1 or later. The reason is that security support for PHP version prior 8.1 have been dropped by the maintainers as you can see in the official PHP documentation http://php.net/supported-versions.php.
+For security reasons and in order to use NADI in 2024 we hereby politely encourage you to migrate your environments to at least PHP 8.1 until then.
 
 Thank you all for your support and understanding.
 
@@ -127,6 +127,7 @@ It is __not__ possible to activate *NADI* for a site inside a network.
 For detailed information you can visit the official [GitHub repository of Next Active Directory Integration](https://github.com/NeosIT/active-directory-integration2)
 
 = UNRELEASED =
+* CHANGED: Drop PHP 8.0 support from CI (#189)
 
 = 3.1.2 =
 * CHANGED: WordPress 6.4 compatibility has been checked