diff --git a/CITATION.cff b/CITATION.cff
index 5ef624a2..077e7935 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -9,5 +9,5 @@ authors:
       given-names: Adam
 
 title: MUSE_OS
-version: v1.4.0
-date-released: 2025-4-3
+version: v1.4.1
+date-released: 2025-5-9
diff --git a/docs/release-notes/index.rst b/docs/release-notes/index.rst
index eb56e385..67c4968a 100644
--- a/docs/release-notes/index.rst
+++ b/docs/release-notes/index.rst
@@ -8,6 +8,7 @@ To update to the latest version, run `pip install --upgrade muse-os`
 .. toctree::
    :maxdepth: 1
 
+   v1.4.1
    v1.4.0
    v1.3.3
    v1.3.2
diff --git a/docs/release-notes/v1.4.1.md b/docs/release-notes/v1.4.1.md
new file mode 100644
index 00000000..2a5c3777
--- /dev/null
+++ b/docs/release-notes/v1.4.1.md
@@ -0,0 +1,10 @@
+# Release notes for MUSE v1.4.1 (May 9, 2025)
+
+These are the main changes in MUSE v1.4.1.
+
+## Fixed a bug affecting technologies with zero existing capacity ({github}`703`)
+
+- There was a small bug introduced in v1.4.0 that meant that commodity demands were failing to be recognised in some subsectors containing technologies with zero existing capacity
+- See {github}`703` for more details
+
+## Fixed a bug with outputs cache feature ({github}`704`)