diff --git a/app-metadata/net.thunderbird.android.beta/en-US/changelogs/9.txt b/app-metadata/net.thunderbird.android.beta/en-US/changelogs/9.txt
new file mode 100644
index 00000000000..d41c1864b86
--- /dev/null
+++ b/app-metadata/net.thunderbird.android.beta/en-US/changelogs/9.txt
@@ -0,0 +1,7 @@
+Thunderbird for Android version 9.0b1, based on K-9 Mail. Changes include:
+- Account initials now use the display name, improving customizability
+- Account icons remain in the same position when selected
+- Unified inbox enabled only when multiple accounts are configured
+- Push service now starts reliably when expected
+- Correct default delete message action for QR-imported accounts. Please check your fetch mail settings!
+- Folder drawer updates properly on account configuration changes
\ No newline at end of file
diff --git a/app-thunderbird/build.gradle.kts b/app-thunderbird/build.gradle.kts
index 196f2ebbd33..0e54be07000 100644
--- a/app-thunderbird/build.gradle.kts
+++ b/app-thunderbird/build.gradle.kts
@@ -20,7 +20,7 @@ android {
         applicationId = "net.thunderbird.android"
         testApplicationId = "net.thunderbird.android.tests"
 
-        versionCode = 8
+        versionCode = 9
         versionName = "9.0"
 
         // Keep in sync with the resource string array "supported_languages"
@@ -120,7 +120,7 @@ android {
             signingConfig = signingConfigs.getByType(SigningType.TB_BETA)
 
             applicationIdSuffix = ".beta"
-            versionNameSuffix = "b0"
+            versionNameSuffix = "b1"
 
             isMinifyEnabled = true
             isShrinkResources = true
diff --git a/app-thunderbird/src/main/res/raw/changelog_master.xml b/app-thunderbird/src/main/res/raw/changelog_master.xml
index 39d6687056f..cd3a1c3a187 100644
--- a/app-thunderbird/src/main/res/raw/changelog_master.xml
+++ b/app-thunderbird/src/main/res/raw/changelog_master.xml
@@ -5,7 +5,14 @@
      Locale-specific versions are kept in res/raw-<locale qualifier>/changelog.xml.
 -->
 <changelog>
-    <release version="8.0b5" versioncode="8" date="2024-10-28">
+    <release version="9.0b1" versioncode="9" date="2024-11-19">
+        <change>Account initials now use the display name, improving customizability</change>
+        <change>Account icons remain in the same position when selected</change>
+        <change>Unified inbox enabled only when multiple accounts are configured</change>
+        <change>Push service now starts reliably when expected</change>
+        <change>Correct default delete message action for QR-imported accounts. Please check your fetch mail settings!</change>
+        <change>Folder drawer updates properly on account configuration changes</change>
+    </release>    <release version="8.0b5" versioncode="8" date="2024-10-28">
         <change>Unread message colors are updated for better visibility</change>
         <change>You will be asked for a financial contribution once you've used the app for a while. Help us continue developing Thunderbird for Android!</change>
         <change>QR code import now suggests upgrading Thunderbird Desktop</change>