diff --git a/_test/fetchphpunit.php b/_test/fetchphpunit.php
index 856e42382..de4cf5f79 100755
--- a/_test/fetchphpunit.php
+++ b/_test/fetchphpunit.php
@@ -8,8 +8,8 @@ $phpVersion = PHP_MAJOR_VERSION . '.' . PHP_MINOR_VERSION;
 print "Running PHP $phpVersion\n";
 
 
-if(version_compare($phpVersion, '7.2') < 0) {
-    echo 'we no longer support PHP versions < 7.2 and thus do not support tests on them';
+if(version_compare($phpVersion, '7.4') < 0) {
+    echo 'we no longer support PHP versions < 7.4 and thus do not support tests on them';
     exit(1);
 }
 
diff --git a/composer.json b/composer.json
index e8178fff0..3f5a01b8d 100644
--- a/composer.json
+++ b/composer.json
@@ -5,7 +5,7 @@
     "type": "project",
     "license": "GPL v2",
     "require": {
-        "php": ">=7.2",
+        "php": ">=7.4",
         "ext-json": "*",
         "splitbrain/php-archive": "~1.0",
         "phpseclib/phpseclib": "~2.0",
@@ -21,7 +21,7 @@
     },
     "config": {
         "platform": {
-            "php": "7.2"
+            "php": "7.4"
         }
     },
     "suggest": {
diff --git a/inc/infoutils.php b/inc/infoutils.php
index ef47060fa..0044f00b4 100644
--- a/inc/infoutils.php
+++ b/inc/infoutils.php
@@ -155,13 +155,13 @@ function check(){
     if ($INFO['isadmin'] || $INFO['ismanager']){
         msg('DokuWiki version: '.getVersion(),1);
 
-        if(version_compare(phpversion(),'7.2.0','<')){
-            msg('Your PHP version is too old ('.phpversion().' vs. 7.2+ needed)',-1);
+        if(version_compare(phpversion(),'7.4.0','<')){
+            msg('Your PHP version is too old ('.phpversion().' vs. 7.4+ needed)',-1);
         }else{
             msg('PHP version '.phpversion(),1);
         }
     } else {
-        if(version_compare(phpversion(),'7.2.0','<')){
+        if(version_compare(phpversion(),'7.4.0','<')){
             msg('Your PHP version is too old',-1);
         }
     }
diff --git a/install.php b/install.php
index 20f05a249..bede24cc8 100644
--- a/install.php
+++ b/install.php
@@ -574,8 +574,8 @@ function check_functions()
     global $lang;
     $ok = true;
 
-    if (version_compare(phpversion(), '5.6.0', '<')) {
-        $error[] = sprintf($lang['i_phpver'], phpversion(), '5.6.0');
+    if (version_compare(phpversion(), '7.4.0', '<')) {
+        $error[] = sprintf($lang['i_phpver'], phpversion(), '7.4.0');
         $ok = false;
     }