diff --git a/CHANGELOG.md b/CHANGELOG.md
index cc0027a7..4d04d186 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,12 @@
+# Changelog
+
+**0.15.4** (in progress, last updated 27 September 2024)
+
+*No user-visible changes yet.*
+
+
+---
+
 **0.15.3** (27 September 2024) - *New tree snakes* edition:
 
 **IMPORTANT**:
diff --git a/unpythonic/__init__.py b/unpythonic/__init__.py
index ca8974c4..63b4b756 100644
--- a/unpythonic/__init__.py
+++ b/unpythonic/__init__.py
@@ -7,7 +7,7 @@
 for a trip down the rabbit hole.
 """
 
-__version__ = '0.15.3'
+__version__ = '0.15.4'
 
 from .amb import *  # noqa: F401, F403
 from .arity import *  # noqa: F401, F403