diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9cd4fd5..218c1b2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,10 +1,17 @@
 # Changelog
 
-## Unreleased
+## 1.0.0 - 2025-09-06
+
+After 9 years of stable service, it's finally time for v1.0.0!
+
+### Added
+
+- Added a language reference list with ISO codes and names.
 
 ### Changed
 
 - Drop support for Elixir v1.17 and lower. Minimum supported version is now Elixir v1.18.
+- Replaced `Tesla` dependency with `Req`.
 
 ## 0.6.0 - 2022-06-12
 
diff --git a/README.md b/README.md
index 27cee9b..9076b74 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ Add `paasaa` to your list of dependencies in `mix.exs`:
 
 ```elixir
 def deps do
-  [{:paasaa, "~> 0.6.0"}]
+  [{:paasaa, "~> 1.0.0"}]
 end
 ```
 
diff --git a/mix.exs b/mix.exs
index 0439c1e..04c7f49 100644
--- a/mix.exs
+++ b/mix.exs
@@ -4,7 +4,7 @@ defmodule Paasaa.Mixfile do
   def project do
     [
       app: :paasaa,
-      version: "0.6.0",
+      version: "1.0.0",
       elixir: "~> 1.18",
       elixirc_paths: elixirc_paths(Mix.env()),
       description: description(),