diff --git a/admin/environment.xml b/admin/environment.xml
index 834b0177082..0d6f278cb42 100644
--- a/admin/environment.xml
+++ b/admin/environment.xml
@@ -4327,6 +4327,7 @@
       <VENDOR name="oracle" version="19" />
     </DATABASE>
     <PHP version="8.1.0" level="required">
+      <RESTRICT function="restrict_php_version_84" message="unsupportedphpversion84" />
     </PHP>
     <PCREUNICODE level="optional">
       <FEEDBACK>
@@ -4522,6 +4523,7 @@
       <VENDOR name="oracle" version="19" />
     </DATABASE>
     <PHP version="8.1.0" level="required">
+      <RESTRICT function="restrict_php_version_84" message="unsupportedphpversion84" />
     </PHP>
     <PCREUNICODE level="optional">
       <FEEDBACK>
diff --git a/lang/en/admin.php b/lang/en/admin.php
index 025dbba2f58..b6c70e0e7a7 100644
--- a/lang/en/admin.php
+++ b/lang/en/admin.php
@@ -1509,6 +1509,7 @@ $string['unsupportedphpversion80'] = 'PHP version 8.0 and higher are not support
 $string['unsupportedphpversion81'] = 'PHP version 8.1 and higher are not supported.';
 $string['unsupportedphpversion82'] = 'PHP version 8.2 and higher are not supported.';
 $string['unsupportedphpversion83'] = 'PHP version 8.3 and higher are not supported.';
+$string['unsupportedphpversion84'] = 'PHP version 8.4 and higher are not supported.';
 $string['unsuspenduser'] = 'Activate user account';
 $string['updateaccounts'] = 'Update existing accounts';
 $string['updatecomponent'] = 'Update component';
diff --git a/lib/environmentlib.php b/lib/environmentlib.php
index 4abbdd82fe4..7c8621248da 100644
--- a/lib/environmentlib.php
+++ b/lib/environmentlib.php
@@ -1699,3 +1699,14 @@ function restrict_php_version_82($result) {
 function restrict_php_version_83($result) {
     return restrict_php_version($result, '8.3');
 }
+
+/**
+ * Check if the current PHP version is greater than or equal to
+ * PHP version 8.4
+ *
+ * @param \environment_results $result an environment_results instance
+ * @return bool result of version check
+ */
+function restrict_php_version_84(environment_results $result) {
+    return restrict_php_version($result, '8.4');
+}