diff --git a/.github/workflows/bamboo_smtp.yml b/.github/workflows/bamboo_smtp.yml
index f561596..ae874fd 100644
--- a/.github/workflows/bamboo_smtp.yml
+++ b/.github/workflows/bamboo_smtp.yml
@@ -15,11 +15,21 @@ jobs:
         elixir: [1.7.4, 1.8.2, 1.9.1, 1.10.3, 1.11.3, 1.12.3, 1.13.4]
         otp: [21.3, 22.3, 23.3, 24.3]
         exclude:
+          - elixir: 1.7.4
+            otp: 23.3
           - elixir: 1.7.4
             otp: 24.3
+          - elixir: 1.8.2
+            otp: 23.3
           - elixir: 1.8.2
             otp: 24.3
           - elixir: 1.9.1
+            otp: 23.3
+          - elixir: 1.9.1
+            otp: 24.3
+          - elixir: 1.10.3
+            otp: 24.3
+          - elixir: 1.11.3
             otp: 24.3
           - elixir: 1.12.3
             otp: 21.3
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3869575..d6883bf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,16 @@
 # CHANGELOG
 
+## 4.2.2
+
+- Use punycode for unicode characters in domain name to fix encoding errors ([#198])
+- Update Elixir/OTP compatibility matrix for tests ([#217])
+
+[#198]: https://github.com/fewlinesco/bamboo_smtp/pull/198
+[#217]: https://github.com/fewlinesco/bamboo_smtp/pull/217
+
 ## 4.2.1
 
-- Remove explicit ranch dependency #208
+- Remove explicit ranch dependency ([#208])
 
 [#208]: https://github.com/fewlinesco/bamboo_smtp/pull/208