diff --git a/PHPCompatibilityWP/ruleset.xml b/PHPCompatibilityWP/ruleset.xml
index 0cd6f82..01a4231 100644
--- a/PHPCompatibilityWP/ruleset.xml
+++ b/PHPCompatibilityWP/ruleset.xml
@@ -8,8 +8,9 @@
     As of WP 5.2, the new minimum PHP requirement is PHP 5.6.20.
     As of WP 6.3, the new minimum PHP requirement is PHP 7.0.0.
     As of WP 6.6, the new minimum PHP requirement is PHP 7.2.24.
+    As of WP 7.0, the new minimum PHP requirement is PHP 7.4.0.
     Add the following in your project PHP_CodeSniffer ruleset to enforce this:
-    <config name="testVersion" value="7.2-"/>
+    <config name="testVersion" value="7.4-"/>
 
     This directive is not included in this ruleset as individual projects may use
     a different (higher) minimum PHP version.
@@ -28,10 +29,10 @@
         * JsonSerializable: since WP 4.4.0 and removed since WP 5.3.0.
         * array_replace_recursive(): since WP 4.5.3 up to 5.2.x. The polyfill was removed in WP 5.3.
         * is_iterable(): since WP 4.9.6 and removed since WP 6.6.0.
-        * is_countable(): since WP 4.9.6
+        * is_countable(): since WP 4.9.6 and removed since WP 7.0.0.
         * IMAGETYPE_WEBP and IMG_WEBP: since WP 5.8.0 and removed since WP 6.6.0.
-        * array_key_first(): since WP 5.9.0
-        * array_key_last(): since WP 5.9.0
+        * array_key_first(): since WP 5.9.0 and removed since WP 7.0.0.
+        * array_key_last(): since WP 5.9.0 and removed since WP 7.0.0.
         * str_contains(): since WP 5.9.0
         * str_starts_with(): since WP 5.9.0
         * str_ends_with(): since WP 5.9.0
diff --git a/README.md b/README.md
index 193aa8b..c281f76 100644
--- a/README.md
+++ b/README.md
@@ -78,8 +78,9 @@ The WordPress minimum PHP requirement was 5.2.4 up to WP 5.1.
 * As of WP 5.2, the new minimum PHP requirement is PHP 5.6.20.
 * As of WP 6.3, the new minimum PHP requirement is PHP 7.0.0.
 * As of WP 6.6, the new minimum PHP requirement is PHP 7.2.24.
+* As of WP 7.0, the new minimum PHP requirement is PHP 7.4.0.
 
-To enforce for PHPCompatibility to run against the PHP version you want to support, add `--runtime-set testVersion 7.2-` to your command-line command or add `<config name="testVersion" value="7.2-"/>` to your [custom ruleset](https://github.com/PHPCompatibility/PHPCompatibility#using-a-custom-ruleset), replacing `7.2-` with a `testVersion` of your choice.
+To enforce for PHPCompatibility to run against the PHP version you want to support, add `--runtime-set testVersion 7.4-` to your command-line command or add `<config name="testVersion" value="7.4-"/>` to your [custom ruleset](https://github.com/PHPCompatibility/PHPCompatibility#using-a-custom-ruleset), replacing `7.4-` with a `testVersion` of your choice.
 
 For example:
 ```bash