diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..082d99c
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,35 @@
+# Changelog
+
+## 1.0 (2019-03-22)
+
+* First stable version of check_fritz
+
+* [#38](https://github.com/mcktr/check_fritz/pull/38) (documentation): Add installation documentation
+* [#37](https://github.com/mcktr/check_fritz/pull/37) (enhancement): Rename check methods to their final names
+* [#36](https://github.com/mcktr/check_fritz/pull/36) (enhancement): Add --version command-line option
+* [#35](https://github.com/mcktr/check_fritz/pull/35) (build): Provide SHA-256 checksum
+* [#34](https://github.com/mcktr/check_fritz/pull/34) (build, tests): Add Go 1.12 to the CI tests
+* [#33](https://github.com/mcktr/check_fritz/pull/33) (tests): Fix golint import path in CI tests
+* [#31](https://github.com/mcktr/check_fritz/pull/31) (bug): Make password optional
+* [#30](https://github.com/mcktr/check_fritz/pull/30) (bug): Fix wrong performance data value in socketpower
+* [#29](https://github.com/mcktr/check_fritz/pull/29) (enhancement): Calculate human readable uptime
+* [#28](https://github.com/mcktr/check_fritz/pull/28) (bug): Fix wrong new line statement in output
+* [#27](https://github.com/mcktr/check_fritz/pull/27) (bug): Fix performance data output in downstream_max
+* [#26](https://github.com/mcktr/check_fritz/pull/26) (bug): Fix null pointer reference
+* [#24](https://github.com/mcktr/check_fritz/pull/24) (bug): Make Golint happy
+* [#23](https://github.com/mcktr/check_fritz/pull/23) (enhancement): Add Travis CI integration
+* [#22](https://github.com/mcktr/check_fritz/pull/22) (code-quality): Use go-cmdline library
+* [#21](https://github.com/mcktr/check_fritz/pull/21) (code-quality): Make Golint happier
+* [#20](https://github.com/mcktr/check_fritz/pull/20) (enhancement): Implement performance data output
+* [#18](https://github.com/mcktr/check_fritz/pull/18) (bug): Fix wrong error message in CheckSmartThermometer
+* [#17](https://github.com/mcktr/check_fritz/pull/17) (enhancement): Implement two check methods for smart sockets
+* [#16](https://github.com/mcktr/check_fritz/pull/16) (documentation): Doc: Update parameter and methods
+* [#15](https://github.com/mcktr/check_fritz/pull/15) (enhancement): AImplement check method for smart thermostats
+* [#14](https://github.com/mcktr/check_fritz/pull/14) (bug): Set default thresholds to -1 and ignore them
+* [#12](https://github.com/mcktr/check_fritz/pull/12) (code-quality): Refactor some variable names to make golint happy
+* [#11](https://github.com/mcktr/check_fritz/pull/11) (code-quality): Add unit tests for package thresholds
+* [#10](https://github.com/mcktr/check_fritz/pull/10) (enhancement): Implement interface_update method
+* [#9](https://github.com/mcktr/check_fritz/pull/9) (enhancement): Implement thresholds
+* [#8](https://github.com/mcktr/check_fritz/pull/8) (enhancement): Implement more methods
+* [#7](https://github.com/mcktr/check_fritz/pull/7) (code-quality): Use naming convention for all files
+* [#6](https://github.com/mcktr/check_fritz/pull/6) (enhancement): Add more check methods
\ No newline at end of file
diff --git a/cmd/check_fritz/main.go b/cmd/check_fritz/main.go
index 5c51d03..26a9f61 100644
--- a/cmd/check_fritz/main.go
+++ b/cmd/check_fritz/main.go
@@ -9,7 +9,7 @@ import (
 )
 
 // program version
-var version = "0.1"
+var version = "1.0"
 
 // internal exit codes
 var exitOk = 0