diff --git a/package-lock.json b/package-lock.json
index a883954..a74d998 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "astronomical-algorithms",
-  "version": "1.8.2",
+  "version": "1.9.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "astronomical-algorithms",
-      "version": "1.8.2",
+      "version": "1.9.0",
       "license": "MIT",
       "dependencies": {
         "dayjs": "^1.11.0"
diff --git a/package.json b/package.json
index 588fb63..7ecf902 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "astronomical-algorithms",
-  "version": "1.8.2",
+  "version": "1.9.0",
   "description": "Astronomical Algorithms for node.js",
   "files": [
     "dist"