diff --git a/gitea/gitea.yaml b/gitea/gitea.yaml
index a20e27a..e0feee0 100644
--- a/gitea/gitea.yaml
+++ b/gitea/gitea.yaml
@@ -119,7 +119,14 @@ spec:
         kubernetes.io/arch: arm64
       containers:
       - name: gitea-runner
-        image: vegardit/gitea-act-runner:latest
+        image: vegardit/gitea-act-runner:v0.12.0
+        resources:
+          requests:
+            memory: "512Mi"
+            cpu: "250m"
+          limits:
+            memory: "1Gi"
+            cpu: "500m"
         env:
         - name: GITEA_INSTANCE_URL
           valueFrom:
diff --git a/monitoring/prometheus-deployment.yaml b/monitoring/prometheus-deployment.yaml
index 825ecf1..8f420b6 100644
--- a/monitoring/prometheus-deployment.yaml
+++ b/monitoring/prometheus-deployment.yaml
@@ -15,9 +15,10 @@ spec:
       labels:
         app: prometheus
     spec:
-      # Prevent scheduling on Raspberry Pi due to resource requirements (512Mi-1Gi memory, 500m-1000m CPU)
+      # Target the nucbox (amd64, 24Gi RAM) which is the only node with enough memory for Prometheus.
       nodeSelector:
-        hardware: high-memory
+        kubernetes.io/os: linux
+        kubernetes.io/arch: amd64
       serviceAccountName: prometheus
       containers:
         - name: prometheus