diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e11e95..083fdf4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+## v1.5.1 (2024-09-05)
+
+### Refactor
+
+- **nix**: update nixfmt hook.
+- **devenv**: switch to `nixpkgs-unstable` repository.
+
 ## v1.5.0 (2024-08-28)
 
 ### Feat
diff --git a/src/inception/__init__.py b/src/inception/__init__.py
index 943b911..68fe770 100644
--- a/src/inception/__init__.py
+++ b/src/inception/__init__.py
@@ -1 +1 @@
-__version__ = "v1.5.0"
+__version__ = "v1.5.1"