diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1d9924b03d7fd51d0ab963a0d57c06a868b5a2a2..471339512896a653c614d6f39ea996a700ef7f9b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,9 @@
 Changelog
 =========
 
+Unreleased
+----------
+
 [1.8.0] (2025-02-17)
 --------------------
 
diff --git a/pyproject.toml b/pyproject.toml
index a805b3c1d8440cd805f0171266ca6efc09610f47..20c684bb0e5433b228df46988b1ced6c3cee29ef 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "whisper-asr-webservice"
-version = "1.8.0"
+version = "1.9.0-dev"
 description = "Whisper ASR Webservice is a general-purpose speech recognition webservice."
 homepage = "https://github.com/ahmetoner/whisper-asr-webservice/"
 license = "https://github.com/ahmetoner/whisper-asr-webservice/blob/main/LICENCE"