diff --git a/dev/tools/phan/baseline_extended.txt b/dev/tools/phan/baseline_extended.txt
index e5296d4bffc..9ba71871a6d 100644
--- a/dev/tools/phan/baseline_extended.txt
+++ b/dev/tools/phan/baseline_extended.txt
@@ -18,6 +18,8 @@ return [
         'htdocs/accountancy/admin/productaccount.php' => ['PhanTypeMismatchArgumentNullableInternal'],	// false positive
         'internal' => ['PhanUndeclaredConstant'],
     ],
-    // 'directory_suppressions' => ['src/directory_name' => ['PhanIssueName1', 'PhanIssueName2']] can be manually added if needed.
+    'directory_suppressions' => [
+    	'htdocs/admin/tools' => ['PhanPluginUnknownArrayPropertyType', 'PhanTypeArraySuspiciousNull', 'PhanPluginUnknownArrayMethodParamType', 'PhanTypeSuspiciousEcho']
+    ]
     // (directory_suppressions will currently be ignored by subsequent calls to --save-baseline, but may be preserved in future Phan releases)
 ];