diff --git a/CHANGELOG.md b/CHANGELOG.md
index f205de6..5e9c752 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # APC P15 Tool Changelog
 
+## [v1.0.0] - 2024-07-01
+
+First official stable release.
+
+Fixes Go version in Github action.
+
+
 ## [v0.5.3] - 2024-06-24
 
 Add 3,072 bit RSA key support.
diff --git a/pkg/app/app.go b/pkg/app/app.go
index c228b20..d2d9767 100644
--- a/pkg/app/app.go
+++ b/pkg/app/app.go
@@ -12,7 +12,7 @@ import (
 )
 
 const (
-	appVersion = "0.5.3"
+	appVersion = "1.0.0"
 )
 
 // struct for receivers to use common app pieces