diff --git a/metadata/net.thunderbird.android.beta.yml b/metadata/net.thunderbird.android.beta.yml
index d5a5ecbe7a..cfeeeed3dc 100644
--- a/metadata/net.thunderbird.android.beta.yml
+++ b/metadata/net.thunderbird.android.beta.yml
@@ -201,6 +201,20 @@ Builds:
       - sed -i -e 's/feature.funding.googleplay/feature.funding.link/' build.gradle.kts
     build: gradle assembleFossBeta
 
+  - versionName: 12.0b3
+    versionCode: 21
+    commit: a9d34e9c8db9d834012d652dbb315b36c93c2bb6
+    subdir: app-thunderbird
+    output: build/outputs/apk/foss/beta/app-thunderbird-foss-beta-unsigned.apk
+    rm:
+      - app-k9mail
+      - feature/funding/googleplay
+    prebuild:
+      - sed -i -e 's/maven.mozilla.org/repo1.maven.org/' -e '/glean/d' -e '/googleplay/d'
+        -e '/foojay/d' ../settings.gradle.kts
+      - sed -i -e 's/feature.funding.googleplay/feature.funding.link/' build.gradle.kts
+    build: gradle assembleFossBeta
+
 AllowedAPKSigningKeys: 056bfafb450249502fd9226228704c2529e1b822da06760d47a85c9557741fbd
 
 MaintainerNotes: |-
@@ -222,5 +236,5 @@ MaintainerNotes: |-
 
 AutoUpdateMode: None
 UpdateCheckMode: None
-CurrentVersion: 12.0b1
-CurrentVersionCode: 19
+CurrentVersion: 12.0b3
+CurrentVersionCode: 21