diff --git a/cluster/applications/minecraft/configmap.yaml b/cluster/applications/minecraft/configmap.yaml
index 87958e4..b1ee817 100644
--- a/cluster/applications/minecraft/configmap.yaml
+++ b/cluster/applications/minecraft/configmap.yaml
@@ -40,6 +40,6 @@ data:
   RCON_PORT: "25575"
 
   # Plugin auto-download — SleepMost for single-player sleep
-  # SleepMost v5.6.2: supports PaperMC 1.21.x (use latest release for 1.21.11+)
+  # SleepMost v5.5.3: latest release as of 2026-07-19, supports PaperMC 1.21.x
   # Source: https://github.com/mrgeneralq/sleep-most/releases
-  PLUGINS: "https://github.com/mrgeneralq/sleep-most/releases/download/v5.6.2/SleepMost-5.6.2.jar"
+  PLUGINS: "https://github.com/mrgeneralq/sleep-most/releases/download/v5.5.3/sleep-most-5.5.3.jar"