diff --git a/CHANGELOG.md b/CHANGELOG.md
index cb77d63..512e192 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 0.21.1 (25.04.2024)
+
+* Add stale issues policy. See [PR #363](https://github.com/kommitters/stellar_sdk/pull/363)
+
 ## 0.21.0 (04.03.2024)
 
 * Add Dynamic network configuration: Now you should provide Horizon URL and Network Passphrase. See [Issue #352](https://github.com/kommitters/stellar_sdk/issues/352).
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index caca96b..1bf18d7 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -48,6 +48,15 @@ At this point, you're waiting on us. We like to at least comment on pull request
 business days (typically, one business day). We may suggest some changes, improvements or
 alternatives.
 
+# Stale issues
+
+To ensure that our issue tracker remains organized and relevant, we have implemented a policy for handling Stale issues. Please review the following guidelines:
+
+1. **Marking as Stale**: Issues will be automatically marked as **Stale** after 60 days of inactivity.
+2. **Closing Stale Issues**: After an issue has been marked as Stale, a comment will be posted on the issue indicating that it will be closed if there is no further activity or information provided within a specified period.
+
+Thank you for helping us maintain a clean and efficient issue tracker!
+
 ## Additional resources
 
 * Explore the Stellar API
diff --git a/README.md b/README.md
index 58127dd..bd8dcaf 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@ The **Stellar SDK** is composed of two complementary components: **`TxBuild`** +
 ```elixir
 def deps do
   [
-    {:stellar_sdk, "~> 0.20.0"}
+    {:stellar_sdk, "~> 0.21.1"}
   ]
 end
 ```
diff --git a/mix.exs b/mix.exs
index 3bec3b7..f31269a 100644
--- a/mix.exs
+++ b/mix.exs
@@ -2,7 +2,7 @@ defmodule Stellar.MixProject do
   use Mix.Project
 
   @github_url "https://github.com/kommitters/stellar_sdk"
-  @version "0.21.0"
+  @version "0.21.1"
 
   def project do
     [