diff --git a/package.json b/package.json
index bb5ce314..60e4dc1c 100644
--- a/package.json
+++ b/package.json
@@ -74,7 +74,7 @@
     "happy-dom": "^10.5.2",
     "idb-keyval": "^6.2.1",
     "ignore-dependency-scripts": "^1.0.1",
-    "iso-639-1": "^2.1.15",
+    "iso-639-1": "^3.0.0",
     "js-yaml": "^4.1.0",
     "lru-cache": "^10.0.0",
     "masto": "^5.11.3",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 37e4bd98..2b2d03a9 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -149,8 +149,8 @@ importers:
         specifier: ^1.0.1
         version: 1.0.1
       iso-639-1:
-        specifier: ^2.1.15
-        version: 2.1.15
+        specifier: ^3.0.0
+        version: 3.0.1
       js-yaml:
         specifier: ^4.1.0
         version: 4.1.0
@@ -9933,8 +9933,8 @@ packages:
   /isexe@2.0.0:
     resolution: {integrity: sha512-RHxMLp9lnKHGHRng9QFhRCMbYAcVpn69smSGcq3f36xjgVVWThj4qqLbTLlq7Ssj8B+fIQ1EuCEGI2lKsyQeIw==}
 
-  /iso-639-1@2.1.15:
-    resolution: {integrity: sha512-7c7mBznZu2ktfvyT582E2msM+Udc1EjOyhVRE/0ZsjD9LBtWSm23h3PtiRh2a35XoUsTQQjJXaJzuLjXsOdFDg==}
+  /iso-639-1@3.0.1:
+    resolution: {integrity: sha512-MYObGS3URxBV2w9S+rvW4O1jKT1/aAWq6Jqo2NFOIDys3R8japWGOzEBv8eu4mHDWDSslBrPVNmBEirha7t/vA==}
     engines: {node: '>=6.0'}
     dev: false