diff --git a/VERSION b/VERSION
index ca75280..4ef2eb0 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.38.0
+0.39.0
diff --git a/frontend/src/lib/releaseNotes.ts b/frontend/src/lib/releaseNotes.ts
index 6d0fbe8..c6cf63c 100644
--- a/frontend/src/lib/releaseNotes.ts
+++ b/frontend/src/lib/releaseNotes.ts
@@ -14,6 +14,14 @@ export interface ReleaseEntry {
 }
 
 export const RELEASE_NOTES: ReleaseEntry[] = [
+  {
+    version: "0.39.0",
+    date: "2026-07-12",
+    summary: "Sign-in security hardening.",
+    features: [
+      "New “Log out other sessions” button in Settings → Account, to sign out everywhere else.",
+    ],
+  },
   {
     version: "0.38.0",
     date: "2026-07-12",