diff --git a/releases-manifest.json b/releases-manifest.json
index bc3b8cd..37fd7bf 100644
--- a/releases-manifest.json
+++ b/releases-manifest.json
@@ -1,11 +1,25 @@
 {
   "schema": "silentmode-releases/2",
-  "updated": "2026-10-27T16:00:00.000Z",
+  "updated": "2026-10-27T16:30:00.000Z",
   "mirrors": [
     "https://hermes.x/",
     "https://dl.silentmode.st/"
   ],
   "releases": [
+    {
+      "id": "theseus-navigator",
+      "product": "Theseus Navigator",
+      "version": "0.3.121",
+      "date": "2026-10-27",
+      "platform": "win-x64",
+      "signed": false,
+      "signingAuthority": null,
+      "changes": "Settings › General has a new Default handling section (Windows). Toggle to make Theseus the default browser (opens Windows' Default apps so you confirm it there — Windows reserves that choice for the user), and a separate toggle to put Theseus in the Open-with menu for .html, .htm, .pdf, .svg and .xhtml files. Everything is written under HKCU, no admin prompt. Theseus also now opens a file path or URL you pass on the command line as a new tab — which is what Windows calls when you pick Theseus from an Open-with menu.",
+      "files": {
+        "TheseusNavigator-0.3.121-portable.exe": "13c76e2028158f0de16a56323388efb43372407d4659d3194b6a4430df46056e",
+        "TheseusNavigator-Setup-0.3.121.exe": "f53e6428847a6e288d1ce220fa01f2d99db4b50222add9f71a13ec06c3696f8f"
+      }
+    },
     {
       "id": "theseus-navigator",
       "product": "Theseus Navigator",
diff --git a/releases/dl-index.html b/releases/dl-index.html
index 2abd3eb..b25dc8d 100644
--- a/releases/dl-index.html
+++ b/releases/dl-index.html
@@ -59,6 +59,20 @@
      name <code>releases.silentmode.bch</code>; the name pins where it is served from, so a tampered
      mirror cannot change what you check against here.</p>
 
+  <div class="rel">
+    <h2>Theseus Navigator <span style="color:var(--acid)">0.3.121</span></h2>
+    <div class="meta">Windows 64-bit · unsigned · 2026-10-27 · Settings › General has a new Default handling section (Windows). Toggle to make Theseus the default browser (opens Windows' Default apps so you confirm it there — Windows reserves that choice for the user), and a separate toggle to put Theseus in the Open-with menu for .html, .htm, .pdf, .svg and .xhtml files. Everything is written under HKCU, no admin prompt. Theseus also now opens a file path or URL you pass on the command line as a new tab — which is what Windows calls when you pick Theseus from an Open-with menu.</div>
+
+    <div class="file">
+      <div class="n"><a href="https://dl.silentmode.st/TheseusNavigator-0.3.121-portable.exe">TheseusNavigator-0.3.121-portable.exe</a> — portable</div>
+      <code>13c76e2028158f0de16a56323388efb43372407d4659d3194b6a4430df46056e</code>
+    </div>
+    <div class="file">
+      <div class="n"><a href="https://dl.silentmode.st/TheseusNavigator-Setup-0.3.121.exe">TheseusNavigator-Setup-0.3.121.exe</a> — installer</div>
+      <code>f53e6428847a6e288d1ce220fa01f2d99db4b50222add9f71a13ec06c3696f8f</code>
+    </div>
+  </div>
+
   <div class="rel">
     <h2>Theseus Navigator <span style="color:var(--acid)">0.3.120</span></h2>
     <div class="meta">Windows 64-bit · unsigned · 2026-10-27 · Pick AI button opens its list again — a close-on-click-away handler the overlay inherited from 0.3.106 was closing the pop the moment it opened, so from 0.3.106 through 0.3.119 Pick AI looked like a no-op. Fixed to use the same server-side click-away contract the search engine picker uses. Also: DuckDuckGo AI renamed to Duck AI (duck.ai is Duck's own name for the chat UI, and it reads cleaner next to the DuckDuckGo search entry).</div>
diff --git a/theseus/index.html b/theseus/index.html
index 9cc0180..9db17af 100644
--- a/theseus/index.html
+++ b/theseus/index.html
@@ -144,7 +144,7 @@
         <h3>Theseus for Windows</h3>
         <p class="desc">Full-window desktop browser with Tor toggle, search bar, password
            vault and add-ons. macOS and Linux not yet packaged.</p>
-        <div class="meta">v0.3.120 · installer ~137 MB · portable ~137 MB · unsigned</div>
+        <div class="meta">v0.3.121 · installer ~137 MB · portable ~137 MB · unsigned</div>
         <div class="buttons">
           <a class="btn acid" href="https://dl.silentmode.st/latest/TheseusNavigator-Setup.exe">Installer</a>
           <a class="btn ghost" href="https://dl.silentmode.st/latest/TheseusNavigator-portable.exe">Portable .exe</a>