diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..42e12f5
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,11 @@
+# Changelog
+
+## v1.0.0 (2022-01-03)
+### ✨ Features
+ - Add nullable options to `@EhterAddress`, `@EtherTxHash`
+
+## v0.1.0 (2021-12-02)
+First release! 🥳 
+### ✨ Features
+ - Add `@EtherAddress` validator
+ - Add `@EtherTxHash` validator
diff --git a/build.gradle.kts b/build.gradle.kts
index 0df43b2..c93e8ec 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -7,7 +7,7 @@ plugins {
 }
 
 group = "io.eyesprotocol.validator"
-version = "0.1.0"
+version = "1.0.0"
 
 java.sourceCompatibility = JavaVersion.VERSION_1_8
 java.targetCompatibility = JavaVersion.VERSION_1_8