diff --git a/.changeset/environment-creation-support.md b/.changeset/environment-creation-support.md
deleted file mode 100644
index 15baa02..0000000
--- a/.changeset/environment-creation-support.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-"@orbat-mapper/msdllib": minor
----
-
-Add programmatic creation support for Environment elements. This includes:
-
-- `Environment.create()` static factory method for creating new Environment elements
-- `areaOfInterest` getter and setter for programmatic manipulation of AreaOfInterest
-- `RectangleArea.create()` static factory method for creating RectangleArea elements with coordinate cloning
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9b68e63..bcdd3ac 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 # @orbat-mapper/msdllib
 
+## 1.4.0
+
+### Minor Changes
+
+- fe5a9d7: Add programmatic creation support for Environment elements. This includes:
+  - `Environment.create()` static factory method for creating new Environment elements
+  - `areaOfInterest` getter and setter for programmatic manipulation of AreaOfInterest
+  - `RectangleArea.create()` static factory method for creating RectangleArea elements with coordinate cloning
+
 ## 1.3.1
 
 ### Patch Changes
diff --git a/package.json b/package.json
index e6d4588..ad8ebe7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@orbat-mapper/msdllib",
-  "version": "1.3.1",
+  "version": "1.4.0",
   "description": "A library for manipulating Military Scenario Definition Language (MSDL) data",
   "keywords": [],
   "files": [