diff --git a/VERSION b/VERSION
index 7ec1d6d..3e3c2f1 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.1.0
+2.1.1
diff --git a/package.json b/package.json
index 45bcd34..74b88e3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@stll/stdnum",
-  "version": "2.1.0",
+  "version": "2.1.1",
   "description": "Validate, compact, and format standard identifiers for Node.js and Bun. Pure TypeScript, zero dependencies, tree-shakeable per identifier.",
   "keywords": [
     "credit-card",