diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4317eac..7e278e0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # SEOMate Changelog
 
+## 2.2.1 - 2024-04-04  
+### Fixed  
+- Fixed a bug where SEOMate could attempt to use string values as callables in `additionalMeta`  
+
 ## 2.2.0 - 2024-01-19  
 ### Added  
 - Sitemaps now include alternate URLs in `<xhtml:link>` entries, if the `outputAlternate` config setting is `true`. [#79](https://github.com/vaersaagod/seomate/pull/79)  
diff --git a/composer.json b/composer.json
index 0163e65..949ae30 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
     "name": "vaersaagod/seomate",
     "description": "SEO, mate! It's important.",
     "type": "craft-plugin",
-    "version": "2.2.0",
+    "version": "2.2.1",
     "keywords": [
         "craft",
         "cms",
diff --git a/src/services/MetaService.php b/src/services/MetaService.php
index 2c793ba..3bef4e9 100644
--- a/src/services/MetaService.php
+++ b/src/services/MetaService.php
@@ -463,7 +463,7 @@ public function processAdditionalMeta(array $meta, array $context = [], Settings
         }
         
         foreach ($settings->additionalMeta as $key => $value) {
-            if (\is_callable($value)) {
+            if ($value instanceof \Closure) {
                 $r = $value($context);
                 $value = $r;
             }