diff --git a/src/components/Dashboard/context/AppUpdateContext.jsx b/src/components/Dashboard/context/AppUpdateContext.jsx
index 9b4b786..91bf26f 100644
--- a/src/components/Dashboard/context/AppUpdateContext.jsx
+++ b/src/components/Dashboard/context/AppUpdateContext.jsx
@@ -21,6 +21,42 @@ const { Text } = Typography
 const UPDATE_CHECK_INTERVAL_MS = 5 * 60 * 1000
 const DEFAULT_UPDATE_BRANCH = 'main'
 const CURRENT_BUILD_NUMBER = import.meta.env.VITE_BUILD_NUMBER
+const APP_UPDATE_DISMISSED_KEY = 'appUpdateDismissed'
+
+const getDismissedUpdate = () => {
+  try {
+    const stored = sessionStorage.getItem(APP_UPDATE_DISMISSED_KEY)
+    return stored ? JSON.parse(stored) : null
+  } catch {
+    return null
+  }
+}
+
+const isUpdateDismissed = (update) => {
+  if (!update) return false
+
+  const dismissed = getDismissedUpdate()
+  if (!dismissed) return false
+
+  return (
+    dismissed.version === update.version &&
+    dismissed.buildNumber === update.buildNumber &&
+    dismissed.branch === update.branch
+  )
+}
+
+const saveDismissedUpdate = (update) => {
+  if (!update) return
+
+  sessionStorage.setItem(
+    APP_UPDATE_DISMISSED_KEY,
+    JSON.stringify({
+      version: update.version,
+      buildNumber: update.buildNumber,
+      branch: update.branch
+    })
+  )
+}
 
 const AppUpdateContext = createContext()
 
@@ -77,6 +113,7 @@ export const AppUpdateProvider = ({ children }) => {
   const [checking, setChecking] = useState(false)
   const [noUpdateOpen, setNoUpdateOpen] = useState(false)
   const [availableUpdate, setAvailableUpdate] = useState(null)
+  const [updatePromptOpen, setUpdatePromptOpen] = useState(false)
   const [installingUpdate, setInstallingUpdate] = useState(null)
   const [updateProgress, setUpdateProgress] = useState(null)
   const runningCheckRef = useRef(null)
@@ -136,14 +173,20 @@ export const AppUpdateProvider = ({ children }) => {
     }
   }, [])
 
-  const showUpdateIfAvailable = useCallback(async () => {
-    const update = await checkForAvailableUpdate()
-    if (update) {
-      setNoUpdateOpen(false)
-      setAvailableUpdate(update)
-    }
-    return update
-  }, [checkForAvailableUpdate])
+  const showUpdateIfAvailable = useCallback(
+    async ({ forcePrompt = false } = {}) => {
+      const update = await checkForAvailableUpdate()
+      if (update) {
+        setNoUpdateOpen(false)
+        setAvailableUpdate(update)
+        if (forcePrompt || !isUpdateDismissed(update)) {
+          setUpdatePromptOpen(true)
+        }
+      }
+      return update
+    },
+    [checkForAvailableUpdate]
+  )
 
   const checkForUpdates = useCallback(async () => {
     if (!isElectron) return null
@@ -151,7 +194,7 @@ export const AppUpdateProvider = ({ children }) => {
     setChecking(true)
 
     try {
-      const update = await showUpdateIfAvailable()
+      const update = await showUpdateIfAvailable({ forcePrompt: true })
       if (!update) {
         setNoUpdateOpen(true)
       }
@@ -183,15 +226,22 @@ export const AppUpdateProvider = ({ children }) => {
     })
   }, [isElectron, onAppUpdateProgress])
 
+  const dismissUpdatePrompt = () => {
+    if (availableUpdate) {
+      saveDismissedUpdate(availableUpdate)
+    }
+    setUpdatePromptOpen(false)
+  }
+
   const closeUpdateModal = () => {
-    setAvailableUpdate(null)
+    setUpdatePromptOpen(false)
     setInstallingUpdate(null)
     setUpdateProgress(null)
   }
 
   const handleUpdate = async (update) => {
     setNoUpdateOpen(false)
-    setAvailableUpdate(null)
+    setUpdatePromptOpen(false)
     setInstallingUpdate(update)
     setModelWidth(550)
     setUpdateProgress({
@@ -215,7 +265,7 @@ export const AppUpdateProvider = ({ children }) => {
     }
   }
 
-  const updateModalOpen = Boolean(availableUpdate || installingUpdate)
+  const updateModalOpen = Boolean(updatePromptOpen || installingUpdate)
   const updateModalBusy =
     Boolean(installingUpdate) && updateProgress?.phase !== 'error'
 
@@ -268,7 +318,13 @@ export const AppUpdateProvider = ({ children }) => {
         centered
         closable={!updateModalBusy}
         maskClosable={!updateModalBusy}
-        onCancel={updateModalBusy ? undefined : closeUpdateModal}
+        onCancel={
+          updateModalBusy
+            ? undefined
+            : installingUpdate
+              ? closeUpdateModal
+              : dismissUpdatePrompt
+        }
       >
         {installingUpdate ? (
           <AppUpdateProgress
@@ -279,7 +335,7 @@ export const AppUpdateProvider = ({ children }) => {
         ) : (
           <NewAppUpdate
             update={availableUpdate}
-            onCancel={closeUpdateModal}
+            onCancel={dismissUpdatePrompt}
             onUpdate={handleUpdate}
           />
         )}