diff --git a/CHANGELOG.md b/CHANGELOG.md
index 79b71bd..78e0dab 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## X.Y.Z (yyyy-MM-dd)
+## 0.1.0 (2019-12-08)
 
 ### Breaking changes
 * None.
@@ -8,4 +8,4 @@
 * Added API documentation.
 
 ### Fixes
-* None.
\ No newline at end of file
+* None.
diff --git a/package-lock.json b/package-lock.json
index b4e697d..faeca65 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "kalculator",
-  "version": "0.0.0",
+  "version": "0.1.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index c7d1c37..b092cba 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "kalculator",
-  "version": "0.0.0",
+  "version": "0.1.0",
   "description": "A simple calculator",
   "main": "index.js",
   "scripts": {