diff --git a/rules/phpstan-rules.neon b/rules/phpstan-rules.neon
index 807283d..81e9dd2 100644
--- a/rules/phpstan-rules.neon
+++ b/rules/phpstan-rules.neon
@@ -60,7 +60,14 @@ parameters:
             message: 'use MD_STD_IN::move_uploaded_file() instead'
         -
             function: 'mkdir()'
-            message: 'use MD_STD_IN::mkdir() instead'
+            message: 'use MD_STD::mkdir() instead'
+        -
+            function: 'levenshtein()'
+            message: 'use MD_STD::levenshtein() instead'
+        -
+            function: 'json_encode()'
+            message: 'use MD_STD::json_encode() instead'
+    disallowedStaticCalls:
         -
             function: 'MD_STD::startsWith()'
             message: 'use str_starts_with() instead'