diff --git a/android/app/build.gradle b/android/app/build.gradle
index 3910facb..e1dd87a5 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -94,8 +94,8 @@ android {
         applicationId 'cc.agentlabs.opencode'
         minSdkVersion rootProject.ext.minSdkVersion
         targetSdkVersion rootProject.ext.targetSdkVersion
-        versionCode 41
-        versionName "0.4.14"
+        versionCode 42
+        versionName "0.4.15"
 
         buildConfigField "String", "REACT_NATIVE_RELEASE_LEVEL", "\"${findProperty('reactNativeReleaseLevel') ?: 'stable'}\""
     }
diff --git a/app.json b/app.json
index 7f5c94f3..f3ff1218 100644
--- a/app.json
+++ b/app.json
@@ -35,7 +35,7 @@
     },
     "android": {
       "package": "cc.agentlabs.opencode",
-      "versionCode": 41,
+      "versionCode": 42,
       "usesCleartextTraffic": true,
       "adaptiveIcon": {
         "foregroundImage": "./assets/adaptive-icon.png",
diff --git a/distribution/changelogs/42.txt b/distribution/changelogs/42.txt
new file mode 100644
index 00000000..334c09eb
--- /dev/null
+++ b/distribution/changelogs/42.txt
@@ -0,0 +1,5 @@
+v0.4.15 — The app now tells you when a new version is out
+
+• Installs from a downloaded APK, F-Droid or a mirror had no way to learn a newer version existed. The app now checks once a day and shows a dismissible banner when one is available.
+• "Not now" is remembered for that version only.
+• Settings now shows the version you are actually running instead of a hard-coded placeholder.
diff --git a/fastlane/metadata/android/en-US/changelogs/42.txt b/fastlane/metadata/android/en-US/changelogs/42.txt
new file mode 100644
index 00000000..334c09eb
--- /dev/null
+++ b/fastlane/metadata/android/en-US/changelogs/42.txt
@@ -0,0 +1,5 @@
+v0.4.15 — The app now tells you when a new version is out
+
+• Installs from a downloaded APK, F-Droid or a mirror had no way to learn a newer version existed. The app now checks once a day and shows a dismissible banner when one is available.
+• "Not now" is remembered for that version only.
+• Settings now shows the version you are actually running instead of a hard-coded placeholder.
diff --git a/scripts/check-version-parity.mjs b/scripts/check-version-parity.mjs
index 2c3eba29..74683b82 100644
--- a/scripts/check-version-parity.mjs
+++ b/scripts/check-version-parity.mjs
@@ -23,6 +23,37 @@ if (code !== expectedCode) {
   errors.push(`Gradle versionCode ${Number.isNaN(code) ? "missing" : code} != app.json versionCode ${expectedCode}`);
 }
 
+// A versionCode left at the previous release's value is the silent half of this
+// failure: version metadata is internally consistent, Play still accepts the
+// upload (CI overrides the code with run_number+100), but the F-Droid repo and
+// every direct-APK install key upgrades off versionCode — so a 0.4.15 APK
+// carrying 0.4.14's code is never offered to the cohort it was cut for.
+// The changelog file is named after the versionCode and its first line names
+// the version, so requiring the two to agree pins the code to this release.
+const changelogPath = `distribution/changelogs/${expectedCode}.txt`;
+let changelog = null;
+try {
+  changelog = await readFile(changelogPath, "utf8");
+} catch {
+  errors.push(`${changelogPath} is missing — every release needs a changelog named after its versionCode`);
+}
+
+if (changelog !== null) {
+  const firstLine = changelog.split("\n", 1)[0].trim();
+  if (!firstLine.startsWith(`v${expectedName}`)) {
+    errors.push(
+      `${changelogPath} describes "${firstLine}", not v${expectedName} — versionCode ${expectedCode} belongs to an earlier release, so bump it`,
+    );
+  }
+}
+
+const fastlanePath = `fastlane/metadata/android/en-US/changelogs/${expectedCode}.txt`;
+try {
+  await readFile(fastlanePath, "utf8");
+} catch {
+  errors.push(`${fastlanePath} is missing — F-Droid reads its release notes from here`);
+}
+
 if (errors.length) {
   console.error(errors.join("\n"));
   process.exitCode = 1;