diff --git a/core/index.js b/core/index.js
index 230e9e2..4e25c40 100644
--- a/core/index.js
+++ b/core/index.js
@@ -1,5 +1,5 @@
-global.dde_version = "3.8.17" //require("../package.json").version
-global.dde_release_date = "Dec 6, 2023" //require("../package.json").release_date
+global.dde_version = "3.8.18" //require("../package.json").version
+global.dde_release_date = "Dec 15, 2023" //require("../package.json").release_date
 
 console.log("dde_version: " + global.dde_version + " dde_release_date: " + global.dde_release_date +
             "\nRead electron_dde/core/job_engine_doc.txt for how to use the Job Engine.\n")
diff --git a/doc/guide.html b/doc/guide.html
index 5618ca4..77f4417 100644
--- a/doc/guide.html
+++ b/doc/guide.html
@@ -8,8 +8,8 @@
 
 <details class="doc_details"><summary>About</summary>
     This is <a href="http://hdrobotic.com/" target="_blank">Dexter</a> Development Environment<br/>
-    version: <span id="dde_version_id">3.8.17</span><br/>
-    released: <span id="dde_release_date_id">Dec 6, 2023</span>
+    version: <span id="dde_version_id">3.8.18</span><br/>
+    released: <span id="dde_release_date_id">Dec 15, 2023</span>
     <p></p>
     DDE helps you create, debug, and send software to a Dexter robot.
     You can use any JavaScript augmented with DDE-specific functions to help find out about,
diff --git a/doc/release_notes.html b/doc/release_notes.html
index 5ee1c0c..639f934 100644
--- a/doc/release_notes.html
+++ b/doc/release_notes.html
@@ -6,6 +6,12 @@
     .doc_details summary { font-weight: 600; }
 </style>
 
+<details class="doc_details"><summary>v 3.8.18, Dec 15, 2023</summary>
+<ul>
+    <li>Fixed bug in Vector.DCM_to_quaternian.</li>
+
+</ul>
+</details>
 <details class="doc_details"><summary>v 3.8.17, Dec 6, 2023</summary>
   <ul>
        <li>Added <code>Dexter.j_move</code>, <code>Dexter.j_reset</code> instructions.</li>
diff --git a/package.json b/package.json
index 41471e2..b76cfad 100644
--- a/package.json
+++ b/package.json
@@ -1,8 +1,8 @@
 {
   "name": "dexter_dev_env",
   "productName": "dexter_dev_env",
-  "version": "3.8.17",
-  "release_date": "Dec 6, 2023",
+  "version": "3.8.18",
+  "release_date": "Dec 15, 2023",
   "description": "Dexter Development Environment for programming the Dexter robot.",
   "author": "Fry",
   "license": "GPL-3.0",