diff --git a/README.md b/README.md
index 6b35b2e236822693dfcbdd5d2ca357ca0f24f05b..6583d3ce69293dee9287d26ddfe635a719371572 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,7 @@
 **Requires at least:** 2.8  
 **Tested up to:** 6.0  
 **Stable tag:** 2.3.3  
+**Requires PHP:** 5.6  
 **License:** GPLv2 or later  
 **License URI:** http://www.gnu.org/licenses/gpl-2.0.html  
 
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000000000000000000000000000000000000..089edb01f56dfb3fde50fe0d02cec3482e2e155a
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,18 @@
+{
+  "name"        : "ethitter/taxonomy-dropdown-widget",
+  "description" : "Creates a dropdown list of non-hierarchical taxonomies as an alternative to the term (tag) cloud. Formerly known as Tag Dropdown Widget.",
+  "homepage"    : "https://ethitter.com/",
+  "type"        : "wordpress-plugin",
+  "keywords"    : [ "tag", "tags", "taxonomy", "sidebar", "widget", "widgets", "dropdown", "drop down" ],
+  "license"     : "GPL-2.0+",
+  "authors"     : [
+    {
+      "name"     : "Erick Hitter",
+      "email"    : "wp@ethitter.com",
+      "homepage" : "https://ethitter.com/"
+    }
+  ],
+  "require" : {
+    "php" : ">=5.6.0"
+  }
+}
diff --git a/languages/tag-dropdown-widget.pot b/languages/tag-dropdown-widget.pot
index f3ef94d79b64878b6f008ac153823b2e508deb97..58e8c2e561c95147a69a850e413d732de859be1a 100644
--- a/languages/tag-dropdown-widget.pot
+++ b/languages/tag-dropdown-widget.pot
@@ -164,4 +164,4 @@ msgstr ""
 
 #. Author URI of the plugin/theme
 msgid "https://ethitter.com/"
-msgstr ""
+msgstr ""
\ No newline at end of file
diff --git a/phpcs.xml b/phpcs.xml
index efe6c623e993754c21d5611d22cc7d6d81f7c165..dfe35ebac8b6b81b4f2805c1264e18878973712b 100644
--- a/phpcs.xml
+++ b/phpcs.xml
@@ -19,7 +19,7 @@
 
 	<!-- Rules: Check PHP version compatibility -->
 	<!-- https://github.com/PHPCompatibility/PHPCompatibility#sniffing-your-code-for-compatibility-with-specific-php-versions -->
-	<config name="testVersion" value="7.2-"/>
+	<config name="testVersion" value="5.6-"/>
 	<!-- https://github.com/PHPCompatibility/PHPCompatibilityWP -->
 	<rule ref="PHPCompatibilityWP"/>
 
diff --git a/readme.txt b/readme.txt
index c30cad813e519e36ec72d3e039fb4bd7b49c1bb4..564812b693221c13ac51ebbca9f71e4ce2ffce7f 100644
--- a/readme.txt
+++ b/readme.txt
@@ -5,6 +5,7 @@ Tags: tag, tags, taxonomy, sidebar, widget, widgets, dropdown, drop down
 Requires at least: 2.8
 Tested up to: 6.0
 Stable tag: 2.3.3
+Requires PHP: 5.6
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html