diff --git a/metadata/threads.server.yml b/metadata/threads.server.yml
index 28434a1e86..fbd0757a87 100644
--- a/metadata/threads.server.yml
+++ b/metadata/threads.server.yml
@@ -923,7 +923,20 @@ Builds:
       - yes
     prebuild: echo -e "\norg.gradle.jvmargs=-Xmx4096m" >> ../gradle.properties
 
+  - versionName: 3.5.5
+    versionCode: 355
+    commit: 770bf7892d0255b45420e31bf63d079ecedbf7ed
+    subdir: app
+    sudo:
+      - echo "deb https://deb.debian.org/debian trixie main" > /etc/apt/sources.list.d/trixie.list
+      - apt-get update
+      - apt-get install -y -t trixie openjdk-21-jdk-headless
+      - update-alternatives --auto java
+    gradle:
+      - yes
+    prebuild: echo -e "\norg.gradle.jvmargs=-Xmx4096m" >> ../gradle.properties
+
 AutoUpdateMode: Version
 UpdateCheckMode: Tags
-CurrentVersion: 3.5.3
-CurrentVersionCode: 353
+CurrentVersion: 3.5.5
+CurrentVersionCode: 355