diff --git a/CHANGELOG.md b/CHANGELOG.md
index 90483af..0efe731 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
-# Upcoming release
-`TODO`\
+# Changelog
+Strictly follows [Semantic Versioning 2.0.0.](https://semver.org/).
+
+## v0.4.0
+`2021-04-27`\
 \
 :rocket: Features:
 - findIso3166Country()
@@ -7,13 +10,13 @@
 - isEuropeanUnionMember()
 - isValidIso3166Code()
 
-# v0.3.0
+## v0.3.0
 `2021-04-26`\
 \
 :rocket: Features:
 - isBrowserCompatible()
 
-# v0.2.0
+## v0.2.0
 `2021-04-20`\
 \
 :rocket: Features:
@@ -22,7 +25,7 @@
 :bulb: Enhancements:
 - sortBy(), sortByInplace() - allow sorting by with same order for all selectors
 
-# v0.1.0
+## v0.1.0
 `2021-04-13`\
 \
 Initial public release.
diff --git a/DOCUMENTATION.md b/DOCUMENTATION.md
index b746d9c..6e3dabe 100644
--- a/DOCUMENTATION.md
+++ b/DOCUMENTATION.md
@@ -88,7 +88,6 @@ compare("Ą", "z"); // returns -1
 ```
 
 ### findIso3166Country()
-[`Upcoming release`]
 ```typescript
 import { findIso3166Country } from '@dnvgl/i18n';
 
@@ -227,7 +226,6 @@ getDecimalSeparator("de"); // returns ","
 ```
 
 ### getIso3166Countries()
-[`Upcoming release`]\
 [`ISO 3166 countries`](https://en.wikipedia.org/wiki/List_of_ISO_3166_country_codes)
 ```typescript
 import { getIso3166Countries } from '@dnvgl/i18n';
@@ -284,7 +282,6 @@ isBrowserCompatible(); // returns false, Internet Explorer 11
 ```
 
 ### isEuropeanUnionMember()
-[`Upcoming release`]
 ```typescript
 import { isEuropeanUnionMember } from '@dnvgl/i18n';
 
@@ -296,7 +293,6 @@ isEuropeanUnionMember("USA"); // returns false
 ```
 
 ### isValidIso3166Code()
-[`Upcoming release`]\
 Checks whether code has valid length and country exists.
 ```typescript
 import { isValidIso3166Code } from '@dnvgl/i18n';
diff --git a/README.md b/README.md
index 64e4f0f..cff079c 100644
--- a/README.md
+++ b/README.md
@@ -71,7 +71,6 @@ See full details in the [`DOCUMENTATION.md`](DOCUMENTATION.md) file.
 [`capitalizeFirstLetter()`](DOCUMENTATION.md#capitalizeFirstLetter), [`formatString()`](DOCUMENTATION.md#formatString), [`lowercaseFirstLetter()`](DOCUMENTATION.md#lowercaseFirstLetter), [`normalizeForSearching()`](DOCUMENTATION.md#normalizeForSearching), [`plural()`](DOCUMENTATION.md#plural)
 
 #### Countries
-[`Upcoming release`]\
 [`findIso3166Country()`](DOCUMENTATION.md#findIso3166Country), [`getIso3166Countries()`](DOCUMENTATION.md#getIso3166Countries), [`isEuropeanUnionMember()`](DOCUMENTATION.md#isEuropeanUnionMember), [`isValidIso3166Code()`](DOCUMENTATION.md#isValidIso3166Code)
 
 #### Others
diff --git a/package.json b/package.json
index c7181a3..682df8c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@dnvgl/i18n",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "Set of functions to support multiple languages/cultures in a browser",
   "main": "./lib/index.js",
   "types": "./lib/index.d.ts",