diff --git a/CHANGES.md b/CHANGES.md
index 9915431..49064f9 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,9 @@
 # Release Notes
 
+## 0.4.2
+
+Upgrade the science internal Python distribution to [PBS][PBS] CPython 3.12.4.
+
 ## 0.4.1
 
 This release fixes missing attestations for Linux ARM64 artifacts.
diff --git a/lift.toml b/lift.toml
index 2306b76..a7d4146 100644
--- a/lift.toml
+++ b/lift.toml
@@ -7,8 +7,8 @@ description = "Ship your interpreted executables using science."
 [[lift.interpreters]]
 id = "cpython"
 provider = "PythonBuildStandalone"
-release = "20240415"
-version = "3.12.3"
+release = "20240713"
+version = "3.12.4"
 # By default science ships as a "thin" scie that fetches CPython 3.12 on first run.
 # We use `science lift --invert-lazy cpython ...` when producing "fat" scies.
 lazy = true
diff --git a/science/__init__.py b/science/__init__.py
index e0904e7..cd6dea7 100644
--- a/science/__init__.py
+++ b/science/__init__.py
@@ -3,6 +3,6 @@
 
 from packaging.version import Version
 
-__version__ = "0.4.1"
+__version__ = "0.4.2"
 
 VERSION = Version(__version__)