diff --git a/k8s/transmission/cronjob.yaml b/k8s/transmission/cronjob.yaml
new file mode 100644
index 0000000..f2dc767
--- /dev/null
+++ b/k8s/transmission/cronjob.yaml
@@ -0,0 +1,70 @@
+apiVersion: batch/v1
+kind: CronJob
+metadata:
+  name: transmission-cleanup
+  namespace: htpc
+  labels:
+    app.kubernetes.io/name: transmission-cleanup
+    app.kubernetes.io/part-of: htpc
+spec:
+  schedule: "*/15 * * * *"
+  concurrencyPolicy: Forbid
+  successfulJobsHistoryLimit: 1
+  failedJobsHistoryLimit: 2
+  jobTemplate:
+    spec:
+      template:
+        metadata:
+          labels:
+            app.kubernetes.io/name: transmission-cleanup
+            app.kubernetes.io/part-of: htpc
+        spec:
+          nodeSelector:
+            kubernetes.io/hostname: vmserver
+          restartPolicy: OnFailure
+          containers:
+            - name: cleanup
+              image: lscr.io/linuxserver/transmission:latest
+              imagePullPolicy: IfNotPresent
+              command:
+                - /bin/bash
+                - -c
+                - |
+                  set -euo pipefail
+                  RPC_URL="http://transmission.htpc.svc.cluster.local:9091/transmission/rpc"
+                  MAX_IDLE_SECONDS=43200 # 12 uur
+
+                  SESSION=$(curl -s "$RPC_URL" | sed -n 's/.*X-Transmission-Session-Id: \([^<]*\).*/\1/p')
+                  if [ -z "$SESSION" ]; then
+                    echo "Kon geen X-Transmission-Session-Id ophalen."
+                    exit 1
+                  fi
+
+                  NOW=$(date +%s)
+                  RESPONSE=$(curl -s -H "X-Transmission-Session-Id: $SESSION" \
+                    -d '{"method":"torrent-get","arguments":{"fields":["id","name","activityDate","addedDate","rateDownload","rateUpload","percentDone","status"]}}' \
+                    "$RPC_URL")
+
+                  STALE_JSON=$(echo "$RESPONSE" | jq -c --argjson now "$NOW" --argjson max_idle "$MAX_IDLE_SECONDS" '
+                    [
+                      .arguments.torrents[]
+                      | (. as $t | (if $t.activityDate > $t.addedDate then $t.activityDate else $t.addedDate end)) as $last_active
+                      | select($last_active > 0 and (($now - $last_active) > $max_idle) and (.rateDownload == 0) and (.rateUpload == 0))
+                      | {id: .id, name: .name, idle_hours: ((($now - $last_active) / 3600 * 10 | floor) / 10)}
+                    ]
+                  ')
+
+                  COUNT=$(echo "$STALE_JSON" | jq 'length')
+                  if [ "$COUNT" -eq 0 ]; then
+                    echo "Geen torrents gevonden die langer dan 12 uur inactief zijn."
+                    exit 0
+                  fi
+
+                  echo "Verwijderen van $COUNT inactieve torrents (>12u) inclusief lokale data:"
+                  echo "$STALE_JSON" | jq -r '.[] | " - [\(.id)] \(.name) (\(.idle_hours)u inactief)"'
+
+                  IDS=$(echo "$STALE_JSON" | jq -c '[.[].id]')
+                  REMOVE_PAYLOAD=$(jq -nc --argjson ids "$IDS" '{"method":"torrent-remove","arguments":{"ids":$ids,"delete-local-data":true}}')
+
+                  RESULT=$(curl -s -H "X-Transmission-Session-Id: $SESSION" -d "$REMOVE_PAYLOAD" "$RPC_URL")
+                  echo "RPC resultaat: $RESULT"
diff --git a/k8s/transmission/kustomization.yaml b/k8s/transmission/kustomization.yaml
index 588ccf0..39ab630 100644
--- a/k8s/transmission/kustomization.yaml
+++ b/k8s/transmission/kustomization.yaml
@@ -6,3 +6,4 @@ resources:
   - pvc.yaml
   - service.yaml
   - deployment.yaml
+  - cronjob.yaml