diff --git a/e107_themes/bootstrap3/theme.xml b/e107_themes/bootstrap3/theme.xml
index e5c7956bc..691a052e9 100644
--- a/e107_themes/bootstrap3/theme.xml
+++ b/e107_themes/bootstrap3/theme.xml
@@ -8,6 +8,7 @@
 		<plugin name='featurebox' url='core' />
 		<plugin name='gallery' url='core' />
         <plugin name='rss_menu' url='core' />
+        <plugin name='tinymce4' url='core' />
 		<plugin name='social' url='core' />
 	</plugins>
 	<keywords>
diff --git a/e107_themes/landingzero/theme.xml b/e107_themes/landingzero/theme.xml
index ffc3ee840..2ff1afdb9 100644
--- a/e107_themes/landingzero/theme.xml
+++ b/e107_themes/landingzero/theme.xml
@@ -7,6 +7,7 @@
 	<plugins>
 		<plugin name='gallery' url='core' />
 		<plugin name='rss_menu' url='core' />
+		<plugin name='tinymce4' url='core' />
 		<plugin name='social' url='core' />
 	</plugins>
 	<keywords>
diff --git a/e107_themes/voux/theme.xml b/e107_themes/voux/theme.xml
index a3192342f..0624b038a 100644
--- a/e107_themes/voux/theme.xml
+++ b/e107_themes/voux/theme.xml
@@ -6,6 +6,7 @@
 	<category>blog</category>
 	<plugins>
         <plugin name='rss_menu' url='core' />
+        <plugin name='tinymce4' url='core' />
 		<plugin name='social' url='core' />
 	</plugins>
 	<keywords>
diff --git a/install.php b/install.php
index df239202c..4f89a2c24 100644
--- a/install.php
+++ b/install.php
@@ -11,7 +11,7 @@
 */
 
 // minimal software version
-define('MIN_PHP_VERSION',   '5.4');
+define('MIN_PHP_VERSION',   '5.6');
 define('MIN_MYSQL_VERSION', '4.1.2');
 define('MAKE_INSTALL_LOG', true);