diff --git a/CHANGELOG.md b/CHANGELOG.md
index 75b31a4..0242217 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 1.21.0 - 2024-02-04
+
+### Added
+
+- New OpenAI models: `gpt-3.5-turbo-0125` (new default), `gpt-4-0125-preview`, `gpt-4-turbo-preview`. Thanks [@igor-kupczynski](https://github.com/igor-kupczynskin) for the contribution!
+
 ## 1.20.0 - 2023-12-20
 
 ### Added
diff --git a/app/vscode/asset/package.json b/app/vscode/asset/package.json
index 870a48a..dbb84b4 100644
--- a/app/vscode/asset/package.json
+++ b/app/vscode/asset/package.json
@@ -1,7 +1,7 @@
 {
   "publisher": "rubberduck",
   "name": "rubberduck-vscode",
-  "version": "1.20.0",
+  "version": "1.21.0",
   "displayName": "Rubberduck - ChatGPT for Visual Studio Code",
   "description": "Generate code, edit code, explain code, generate tests, find bugs, diagnose errors, and even create your own conversation templates.",
   "keywords": [
diff --git a/lib/extension/package.json b/lib/extension/package.json
index 13c8139..24f4953 100644
--- a/lib/extension/package.json
+++ b/lib/extension/package.json
@@ -15,7 +15,7 @@
     "@rubberduck/common": "*",
     "handlebars": "4.7.8",
     "marked": "4.2.12",
-    "modelfusion": "0.134.0",
+    "modelfusion": "0.135.1",
     "secure-json-parse": "2.7.0",
     "simple-git": "3.21.0",
     "zod": "3.22.4"
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 25e62b6..b5099fb 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -78,8 +78,8 @@ importers:
         specifier: 4.2.12
         version: 4.2.12
       modelfusion:
-        specifier: 0.134.0
-        version: 0.134.0
+        specifier: 0.135.1
+        version: 0.135.1
       secure-json-parse:
         specifier: 2.7.0
         version: 2.7.0
@@ -2972,8 +2972,8 @@ packages:
       ufo: 1.0.1
     dev: true
 
-  /modelfusion@0.134.0:
-    resolution: {integrity: sha512-ykE6zVm9qT5WlYxUH1esCb7+48qfY9B3ccXY0+myY5jls4CjRPFTy8lG1NGyR3GGHq/fWoW9zEfkKfgcz34rqQ==}
+  /modelfusion@0.135.1:
+    resolution: {integrity: sha512-Ds8xARmwPiXX2Hltu/ZVZait4v8RcXnpmkRPWAdWAng6SO/Gh0hqymnK3miQqLAsnysReWSNNcWTdO/94YMcHQ==}
     engines: {node: '>=18'}
     dependencies:
       eventsource-parser: 1.1.1