diff --git a/.vscodeignore b/.vscodeignore
index d2612b9..d899015 100644
--- a/.vscodeignore
+++ b/.vscodeignore
@@ -3,4 +3,22 @@
 .gitignore
 .gitattributes
 vsc-extension-quickstart.md
+
+# Example content (not for users)
 _strictdoc_examples/**
+
+# Development & test code (Node)
+parse_syntax.js
+package-lock.json
+node_modules/**
+
+# Development & test code (Python)
+tasks.py
+requirements.txt
+tests/**
+
+# GitHub workflows, CI
+.github/**
+
+# Screenshots and extra assets (excluded from VSIX)
+assets/**
diff --git a/README.md b/README.md
index 603ff35..620a235 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ highlighting for the StrictDoc markup language.
 
 [StrictDoc](https://github.com/strictdoc-project/strictdoc) is:
 
-> Software for technical documentation and requirements management. 
+> Software for technical documentation and requirements management.
 
 ## Demos
 
diff --git a/package.json b/package.json
index e706f7b..1bb48b4 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "strictdoc",
   "displayName": "StrictDoc Language Basics",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "publisher": "StrictDoc",
   "description": "Support for the StrictDoc markup: https://github.com/strictdoc-project/",
   "homepage": "https://github.com/strictdoc-project/strictdoc.tmLanguage",
@@ -41,7 +41,7 @@
       }
     ]
   },
-  "dependencies": {
+  "devDependencies": {
     "onigasm": "^2.2.5",
     "vscode-textmate": "^9.2.0",
     "vscode-oniguruma": "^1.5.1"
diff --git a/syntaxes/sdoc.tmLanguage.json b/syntaxes/sdoc.tmLanguage.json
index c85b562..21e88bf 100644
--- a/syntaxes/sdoc.tmLanguage.json
+++ b/syntaxes/sdoc.tmLanguage.json
@@ -1,5 +1,5 @@
 {
-    "comment": "StrictDoc Syntax: version 0.2.0",
+    "comment": "StrictDoc Syntax: version 0.2.1",
     "fileTypes": [ "sdoc" ],
     "firstLineMatch": "^(\\[DOCUMENT\\])$",
     "$schema": "https://raw.githubusercontent.com/martinring/tmlanguage/master/tmlanguage.json",