diff --git a/CHANGELOG.md b/CHANGELOG.md
index 629f46908..2f0d77860 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -37,6 +37,7 @@ Status: unreleased.
 - macOS: keep custom SSH usernames in remote target. (#2046) Thanks @algal.
 
 ### Fixes
+- Telegram: wrap reasoning italics per line to avoid raw underscores. (#2181) Thanks @YuriNachos.
 - Security: harden Tailscale Serve auth by validating identity via local tailscaled before trusting headers.
 - Build: align memory-core peer dependency with lockfile.
 - Security: add mDNS discovery mode with minimal default to reduce information disclosure. (#1882) Thanks @orlyjamie.
diff --git a/src/infra/tailscale.test.ts b/src/infra/tailscale.test.ts
index 44429b8aa..cc31c3ca9 100644
--- a/src/infra/tailscale.test.ts
+++ b/src/infra/tailscale.test.ts
@@ -10,7 +10,7 @@ const {
   disableTailscaleServe,
   ensureFunnel,
 } = tailscale;
-const tailscaleBin = expect.stringMatching(/tailscale$/);
+const tailscaleBin = expect.stringMatching(/tailscale$/i);
 
 describe("tailscale helpers", () => {
   afterEach(() => {