diff --git a/CHANGELOG.md b/CHANGELOG.md
index e4f6198..c87b1d1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,11 +1,18 @@
+## 1.0.0
+
+* Increase minimum supported Ruby version to >= 2.7.0
+* Update dependencies
+* Fix RuboCop violations
+
 ## 0.4.0
 
-This release ensures all links get the `govuk-link` class, no matter which Markdown link syntax is used (#7).
+* Ensure all links get the `govuk-link` class, no matter which Markdown link syntax is used (#7)
 
 ## 0.3.0
 
-This release adds support for tables (#3) and avoids the notorious emphasised `snake_cased_words` issue (#4).
+* Add support for tables (#3)
+* Don’t emphasise snake_cased_words (#4)
 
-## 0.1.0 & 0.2.0
+## 0.1.0 and 0.2.0
 
-Initial release of the code, written by @benilovj and @fofr for the [Get help with tech project](https://github.com/DFE-Digital/get-help-with-tech/pull/171).
+Initial release of the code, written by @benilovj and @fofr for the [Get help with technology service](https://github.com/DFE-Digital/get-help-with-tech/pull/171).
diff --git a/Gemfile.lock b/Gemfile.lock
index dc05a71..4ca9bd2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    govuk_markdown (0.4.0)
+    govuk_markdown (1.0.0)
       activesupport
       redcarpet
 
diff --git a/lib/govuk_markdown/version.rb b/lib/govuk_markdown/version.rb
index 582071e..25a6ea8 100644
--- a/lib/govuk_markdown/version.rb
+++ b/lib/govuk_markdown/version.rb
@@ -1,3 +1,3 @@
 module GovukMarkdown
-  VERSION = "0.4.0".freeze
+  VERSION = "1.0.0".freeze
 end