diff --git a/package-lock.json b/package-lock.json
index 57c082b3..00b82a42 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@natlibfi/melinda-rest-api-commons",
-  "version": "4.1.8",
+  "version": "4.1.9-alpha.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@natlibfi/melinda-rest-api-commons",
-      "version": "4.1.8",
+      "version": "4.1.9-alpha.1",
       "license": "MIT",
       "dependencies": {
         "@natlibfi/marc-record": "^9.0.1",
diff --git a/package.json b/package.json
index a54ed66f..76473eab 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "url": "git@github.com:natlibfi/melinda-rest-api-commons.git"
   },
   "license": "MIT",
-  "version": "4.1.8",
+  "version": "4.1.9-alpha.1",
   "main": "./dist/index.js",
   "engines": {
     "node": ">=18"