diff --git a/package.json b/package.json
index fa2c949..7643d79 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "loopfinder",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "description": "Find the feedback loops in your personal workspace: run your scripts with writes blocked, record what they read and write, add the human/AI steps by hand, and see every loop — including the ones you never declared.",
   "license": "MIT",
   "funding": "https://ko-fi.com/motimotinotch",
diff --git a/vscode/CHANGELOG.md b/vscode/CHANGELOG.md
new file mode 100644
index 0000000..3192b41
--- /dev/null
+++ b/vscode/CHANGELOG.md
@@ -0,0 +1,14 @@
+# Changelog
+
+## 0.1.1 (2026-10-08)
+
+- **Building stops with a clear message when Python cannot start.** Building the bundled demo, or any flow that traces a `.py` script, used to stop with `trace did not finish: … (exit null)` when Python was not installed. It now says which script it could not trace and the `"python"` value in `loopfinder/config.json`, and asks you to install Python 3 or set that value to an interpreter (for example `py` or a full path). The Windows `python` that only opens the Microsoft Store (exit 9009) counts as missing too. ([#5](https://github.com/MotimotiNotch/loopfinder/issues/5))
+- **A failed run no longer shows the previous result.** When tracing failed, the record from the last successful run could be read as this run's result. It is no longer reused.
+
+Python が起動できないとき、`loopfinder/config.json` の `"python"` の値と直し方を出して止まるようにしました（Microsoft Store を開くだけの Windows の `python` も含む）。失敗した回に、前回の記録を今回の結果として使わないようにしました。
+
+## 0.1.0 (2026-10-07)
+
+- First release on the Visual Studio Marketplace and Open VSX: set up a workspace, copy the request for your AI agent, build the graph, and show the loops, without installing Node.
+
+最初の公開。
diff --git a/vscode/package.json b/vscode/package.json
index d3de91b..1e5ebb4 100644
--- a/vscode/package.json
+++ b/vscode/package.json
@@ -2,7 +2,7 @@
   "name": "loopfinder",
   "displayName": "%displayName%",
   "description": "%description%",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "publisher": "motimotinotch",
   "license": "MIT",
   "repository": {