diff --git a/composer.json b/composer.json
index c3250787..57be4bae 100644
--- a/composer.json
+++ b/composer.json
@@ -12,6 +12,7 @@
         "php": ">=7.2.24",
         "behat/behat": "^v3.15.0",
         "dealerdirect/phpcodesniffer-composer-installer": "^0.4.3 || ^0.5 || ^0.6.2 || ^0.7.1 || ^1.0.0",
+        "johnbillion/wp-compat": "^2.0",
         "php-parallel-lint/php-console-highlighter": "^1.0",
         "php-parallel-lint/php-parallel-lint": "^1.3.1",
         "phpcompatibility/php-compatibility": "^10.0",
diff --git a/extension.neon b/extension.neon
index 10b46abc..ae427506 100644
--- a/extension.neon
+++ b/extension.neon
@@ -29,6 +29,10 @@ rules:
 parameters:
   dynamicConstantNames:
     - FOO
+  WPCompat:
+    pluginFile: null
+    # Oldest WordPress version supported by WP-CLI.
+    requiresAtLeast: '4.9'
   strictRules:
     allRules: false
     disallowedLooseComparison: false
@@ -53,9 +57,13 @@ parameters:
     dynamicCallOnStaticMethod: false
     illegalConstructorMethodCall: false
 
-# Add the schema from phpstan-strict-rules so it's available without loading the extension
-# and the above configuration works.
+# Add the schemas from phpstan-strict-rules and wp-compat so they're available without
+# loading the extensions and the above configuration works.
 parametersSchema:
+  WPCompat: structure([
+    pluginFile: schema(string(), nullable())
+    requiresAtLeast: schema(string(), nullable())
+  ])
   strictRules: structure([
     allRules: anyOf(bool(), arrayOf(bool())),
     disallowedLooseComparison: anyOf(bool(), arrayOf(bool())),