diff --git a/metadata/jp.redmine.redmineclient.txt b/metadata/jp.redmine.redmineclient.txt
index 1e144a5118..3224007e9d 100644
--- a/metadata/jp.redmine.redmineclient.txt
+++ b/metadata/jp.redmine.redmineclient.txt
@@ -99,7 +99,12 @@ Build:3.20,53
     subdir=OpenRedmine
     gradle=yes
 
+Build:3.21,56
+    commit=v3.21
+    subdir=OpenRedmine
+    gradle=yes
+
 Auto Update Mode:Version v%v
 Update Check Mode:Tags
-Current Version:3.20
-Current Version Code:53
+Current Version:3.21
+Current Version Code:56