diff --git a/package-lock.json b/package-lock.json
index 678d282..658d3cb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "io-interface",
-  "version": "1.9.0",
+  "version": "1.9.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index b1911f5..a1e5e4e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "io-interface",
-  "version": "1.9.0",
+  "version": "1.9.1",
   "description": "Generate io-ts codec solution from TypeScript native interface",
   "scripts": {
     "test": "cd test && tsc && node compile && node sample.js",