diff --git a/metadata/org.ghostsinthelab.apps.guilelessbopomofo.yml b/metadata/org.ghostsinthelab.apps.guilelessbopomofo.yml
index f4ba7627cd..39e7226b31 100644
--- a/metadata/org.ghostsinthelab.apps.guilelessbopomofo.yml
+++ b/metadata/org.ghostsinthelab.apps.guilelessbopomofo.yml
@@ -725,7 +725,22 @@ Builds:
       - yes
     ndk: r23b
 
+  - versionName: 1.9.21
+    versionCode: 91
+    commit: 3397cab48576e6cf2b90c85e7b66348d8b280ad2
+    subdir: app
+    submodules: true
+    sudo:
+      - apt-get update
+      - apt-get install -y -t bullseye-backports cmake
+      - apt-get install -y automake libsqlite3-dev libtool make ninja-build
+      - apt-get install -y openjdk-17-jdk-headless
+      - update-java-alternatives -a
+    gradle:
+      - yes
+    ndk: r23b
+
 AutoUpdateMode: Version
 UpdateCheckMode: Tags
-CurrentVersion: 1.9.20
-CurrentVersionCode: 90
+CurrentVersion: 1.9.21
+CurrentVersionCode: 91