diff --git a/CHANGES.md b/CHANGES.md
index 43b40c86eed..f7c73a57ee7 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -11,6 +11,14 @@ $ towncrier create <PR-number>.<break|feat|fix>.md --content "Short description"
 
 <!-- towncrier release notes start -->
 
+## __cylc-8.3.1 (Released 2024-07-04)__
+
+### 🔧 Fixes
+
+[#6130](https://github.com/cylc/cylc-flow/pull/6130) - Prevent commands accepting job IDs where it doesn't make sense.
+
+[#6170](https://github.com/cylc/cylc-flow/pull/6170) - Fix an issue where the Cylc logo could appear in the workflow log.
+
 ## __cylc-8.3.0 (Released 2024-06-18)__
 
 ### ⚠ Breaking Changes
diff --git a/changes.d/6130.fix.md b/changes.d/6130.fix.md
deleted file mode 100644
index 8423bfdcd40..00000000000
--- a/changes.d/6130.fix.md
+++ /dev/null
@@ -1 +0,0 @@
-Prevent commands accepting job IDs where it doesn't make sense.
\ No newline at end of file
diff --git a/changes.d/6170.fix.md b/changes.d/6170.fix.md
deleted file mode 100644
index 1675c7dfe7c..00000000000
--- a/changes.d/6170.fix.md
+++ /dev/null
@@ -1 +0,0 @@
-Fix an issue where the Cylc logo could appear in the workflow log.
diff --git a/cylc/flow/__init__.py b/cylc/flow/__init__.py
index 34897137506..96d02a90c11 100644
--- a/cylc/flow/__init__.py
+++ b/cylc/flow/__init__.py
@@ -53,7 +53,7 @@ def environ_init():
 
 environ_init()
 
-__version__ = '8.4.0.dev'
+__version__ = '8.3.1'
 
 
 def iter_entry_points(entry_point_name):