diff --git a/src/hooks/use-topology.ts b/src/hooks/use-topology.ts
index 6e8b8fb..ed7f594 100644
--- a/src/hooks/use-topology.ts
+++ b/src/hooks/use-topology.ts
@@ -14,8 +14,7 @@ export interface LayoutNode extends SimulationNodeDatum {
   compressedAddress?: string
   isSelf: boolean
   deviceName?: string
-  nodeInfoFullRevision?: number
-  nodeInfoFullRevisionEpoch?: string
+  nodeInfoRevision?: number
   x: number
   y: number
 }
@@ -121,8 +120,7 @@ export function useTopology(): UseTopologyResult {
             (n) => n && typeof n.id === 'string' && n.id !== ''
           ).map((n) => ({
             ...n,
-            nodeInfoFullRevision: n.nodeInfoFullRevision ?? 0,
-            nodeInfoFullRevisionEpoch: n.nodeInfoFullRevisionEpoch ?? '',
+            nodeInfoRevision: n.nodeInfoRevision ?? 0,
           }))
         : []
       const topoEdgesRaw: TopologyEdge[] = Array.isArray(payload.edges)
@@ -180,8 +178,7 @@ export function useTopology(): UseTopologyResult {
                   ? {
                       ...n,
                       deviceName: fresh.deviceName,
-                      nodeInfoFullRevision: fresh.nodeInfoFullRevision,
-                      nodeInfoFullRevisionEpoch: fresh.nodeInfoFullRevisionEpoch,
+                      nodeInfoRevision: fresh.nodeInfoRevision,
                     }
                   : n
               })
diff --git a/src/pages/topology.tsx b/src/pages/topology.tsx
index 28c0918..bc11aab 100644
--- a/src/pages/topology.tsx
+++ b/src/pages/topology.tsx
@@ -17,22 +17,6 @@ import { TopologyCanvas } from '@/components/topology/topology-canvas'
 import { NodeDetailSheet } from '@/components/topology/node-detail-sheet'
 import type { NodeInfoDetail } from '@/types/api'
 
-type NodeInfoFreshnessKey = readonly [epoch: string, revision: number]
-
-function getNodeInfoFreshnessKey(node: {
-  nodeInfoFullRevision?: number
-  nodeInfoFullRevisionEpoch?: string
-}): NodeInfoFreshnessKey {
-  return [node.nodeInfoFullRevisionEpoch ?? '', node.nodeInfoFullRevision ?? 0]
-}
-
-function freshnessKeysEqual(
-  left: NodeInfoFreshnessKey | null,
-  right: NodeInfoFreshnessKey
-): boolean {
-  return left?.[0] === right[0] && left?.[1] === right[1]
-}
-
 export function TopologyPage() {
   const { nodes, edges, isLoading, error, relayout } = useTopology()
   const [searchQuery, setSearchQuery] = useState('')
@@ -44,7 +28,7 @@ export function TopologyPage() {
   const [nodeInfo, setNodeInfo] = useState<NodeInfoDetail | null>(null)
   const [nodeInfoLoading, setNodeInfoLoading] = useState(false)
   const nodeInfoSeqRef = useRef(0)
-  const nodeInfoFreshnessRef = useRef<NodeInfoFreshnessKey | null>(null)
+  const nodeInfoRevisionRef = useRef<number | null>(null)
   const nodeInfoRevisionInitializedRef = useRef(false)
 
   const fetchNodeInfo = useCallback((nodeId: string) => {
@@ -73,7 +57,7 @@ export function TopologyPage() {
     if (nodeId) {
       setSheetOpen(true)
       const selected = nodes.find((node) => node.id === nodeId)
-      nodeInfoFreshnessRef.current = getNodeInfoFreshnessKey(selected ?? {})
+      nodeInfoRevisionRef.current = selected?.nodeInfoRevision ?? 0
       nodeInfoRevisionInitializedRef.current = true
       fetchNodeInfo(nodeId)
     } else {
@@ -101,10 +85,10 @@ export function TopologyPage() {
 
   useEffect(() => {
     if (!selectedNode) return
-    const freshnessKey = getNodeInfoFreshnessKey(selectedNode)
+    const nodeInfoRevision = selectedNode.nodeInfoRevision ?? 0
     if (!nodeInfoRevisionInitializedRef.current) return
-    if (!freshnessKeysEqual(nodeInfoFreshnessRef.current, freshnessKey)) {
-      nodeInfoFreshnessRef.current = freshnessKey
+    if (nodeInfoRevisionRef.current !== nodeInfoRevision) {
+      nodeInfoRevisionRef.current = nodeInfoRevision
       fetchNodeInfo(selectedNode.id)
     }
   }, [selectedNode, fetchNodeInfo])
diff --git a/src/types/api.ts b/src/types/api.ts
index 9a87d83..add3820 100644
--- a/src/types/api.ts
+++ b/src/types/api.ts
@@ -80,8 +80,7 @@ export interface TopologyNode {
   compressedAddress?: string
   isSelf: boolean
   deviceName?: string
-  nodeInfoFullRevision?: number
-  nodeInfoFullRevisionEpoch?: string
+  nodeInfoRevision?: number
 }
 
 export interface TopologyEdge {