diff --git a/docs/changelog/0.4.0.rst b/docs/changelog/0.4.0.rst
new file mode 100644
index 00000000..e148a409
--- /dev/null
+++ b/docs/changelog/0.4.0.rst
@@ -0,0 +1,19 @@
+XRTpy v0.4.0 (2023-10-10)
+=========================
+
+Deprecations and Removals
+-------------------------
+- Remove the light-leak files from the repository in favor of pulling them from one of two possible SolarSoft mirrors with the goal of reducing the total repository size. (:pr:`178,180`)
+
+Documentation
+-------------
+- Updated Python example notebooks to ensure a user-friendly and accessible experience. (:pr:`164`)
+- Revised and improved all text/documentation sections of XRTpy to ensure accuracy, clarity, and completeness. (:pr:`165`)
+
+Internal modifications and improvements
+---------------------------------------
+- Modified `~xrtpy.response.xrt_deconvolve` to use the Sunpy data manager to download the data files. (:pr:`172`)
+- Updated the Read the Docs configuration file. (:pr:`173`)
+- Removed psf files after a new improvement in downloading them as part of the XRTpy package. (:pr:`177`)
+- Updated the `xrt_contam_on_ccd.geny` file with new CCD contamination values. (:pr:`191`)
+- Moved `xrt_deconvolve` and `xrt_remove_lightleak` from the `util` directory to a new directory named `image_correction`, and removed the `xrt_` prefix from their names. Renamed `xrt_teem` to `temperature_from_filter_ratio`.  Updated all tests and notebooks to reflect the name and directory changes. (:pr:`196`)
diff --git a/docs/changelog/index.rst b/docs/changelog/index.rst
index 97c3080b..2b1bf0e2 100644
--- a/docs/changelog/index.rst
+++ b/docs/changelog/index.rst
@@ -12,5 +12,6 @@ including bug fixes and changes to the application programming interface
    :maxdepth: 1
 
    dev
+   0.4.0
    0.3.0
    0.2.0
diff --git a/docs/conf.py b/docs/conf.py
index 6bf7dc46..95400ba8 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -19,7 +19,7 @@
 # from xrtpy import __version__
 # release = __version__
 
-release = "0.3.0"
+release = "0.4.0"
 
 # -- General configuration ---------------------------------------------------