diff --git a/client/components/modals/podcast/EpisodeFeed.vue b/client/components/modals/podcast/EpisodeFeed.vue
index 0f75644b..1378dbe5 100644
--- a/client/components/modals/podcast/EpisodeFeed.vue
+++ b/client/components/modals/podcast/EpisodeFeed.vue
@@ -16,11 +16,11 @@
           v-for="(episode, index) in episodesList"
           :key="index"
           class="relative"
-          :class="itemEpisodeMap[episode.cleanUrl] ? 'bg-primary bg-opacity-40' : selectedEpisodes[episode.cleanUrl] ? 'cursor-pointer bg-success bg-opacity-10' : index % 2 == 0 ? 'cursor-pointer bg-primary bg-opacity-25 hover:bg-opacity-40' : 'cursor-pointer bg-primary bg-opacity-5 hover:bg-opacity-25'"
+          :class="getIsEpisodeDownloaded(episode) ? 'bg-primary bg-opacity-40' : selectedEpisodes[episode.cleanUrl] ? 'cursor-pointer bg-success bg-opacity-10' : index % 2 == 0 ? 'cursor-pointer bg-primary bg-opacity-25 hover:bg-opacity-40' : 'cursor-pointer bg-primary bg-opacity-5 hover:bg-opacity-25'"
           @click="toggleSelectEpisode(episode)"
         >
           <div class="absolute top-0 left-0 h-full flex items-center p-2">
-            <span v-if="itemEpisodeMap[episode.cleanUrl]" class="material-icons text-success text-xl">download_done</span>
+            <span v-if="getIsEpisodeDownloaded(episode)" class="material-icons text-success text-xl">download_done</span>
             <ui-checkbox v-else v-model="selectedEpisodes[episode.cleanUrl]" small checkbox-bg="primary" border-color="gray-600" />
           </div>
           <div class="px-8 py-2">
@@ -93,7 +93,7 @@ export default {
       return this.libraryItem.media.metadata.title || 'Unknown'
     },
     allDownloaded() {
-      return !this.episodesCleaned.some((episode) => !this.itemEpisodeMap[episode.cleanUrl])
+      return !this.episodesCleaned.some((episode) => this.getIsEpisodeDownloaded(episode))
     },
     episodesSelected() {
       return Object.keys(this.selectedEpisodes).filter((key) => !!this.selectedEpisodes[key])
@@ -104,18 +104,7 @@ export default {
       return this.$getString('LabelDownloadNEpisodes', [this.episodesSelected.length])
     },
     itemEpisodes() {
-      if (!this.libraryItem) return []
-      return this.libraryItem.media.episodes || []
-    },
-    itemEpisodeMap() {
-      const map = {}
-      this.itemEpisodes.forEach((item) => {
-        if (item.enclosure) {
-          const cleanUrl = this.getCleanEpisodeUrl(item.enclosure.url)
-          map[cleanUrl] = true
-        }
-      })
-      return map
+      return this.libraryItem?.media.episodes || []
     },
     episodesList() {
       return this.episodesCleaned.filter((episode) => {
@@ -127,12 +116,23 @@ export default {
       if (this.episodesList.length === this.episodesCleaned.length) {
         return this.$strings.LabelSelectAllEpisodes
       }
-      const episodesNotDownloaded = this.episodesList.filter((ep) => !this.itemEpisodeMap[ep.cleanUrl]).length
+      const episodesNotDownloaded = this.episodesList.filter((ep) => !this.getIsEpisodeDownloaded(ep)).length
       return this.$getString('LabelSelectEpisodesShowing', [episodesNotDownloaded])
     }
   },
   methods: {
+    getIsEpisodeDownloaded(episode) {
+      return this.itemEpisodes.some((downloadedEpisode) => {
+        if (episode.guid && downloadedEpisode.guid === episode.guid) return true
+        if (!downloadedEpisode.enclosure?.url) return false
+        return this.getCleanEpisodeUrl(downloadedEpisode.enclosure.url) === episode.cleanUrl
+      })
+    },
     /**
+     * UPDATE: As of v2.4.5 guid is used for matching existing downloaded episodes if it is found on the RSS feed.
+     * Fallback to checking the clean url
+     * @see https://github.com/advplyr/audiobookshelf/issues/2207
+     *
      * RSS feed episode url is used for matching with existing downloaded episodes.
      * Some RSS feeds include timestamps in the episode url (e.g. patreon) that can change on requests.
      * These need to be removed in order to detect the same episode each time the feed is pulled.
@@ -169,13 +169,13 @@ export default {
     },
     toggleSelectAll(val) {
       for (const episode of this.episodesList) {
-        if (this.itemEpisodeMap[episode.cleanUrl]) this.selectedEpisodes[episode.cleanUrl] = false
+        if (this.getIsEpisodeDownloaded(episode)) this.selectedEpisodes[episode.cleanUrl] = false
         else this.$set(this.selectedEpisodes, episode.cleanUrl, val)
       }
     },
     checkSetIsSelectedAll() {
       for (const episode of this.episodesList) {
-        if (!this.itemEpisodeMap[episode.cleanUrl] && !this.selectedEpisodes[episode.cleanUrl]) {
+        if (!this.getIsEpisodeDownloaded(episode) && !this.selectedEpisodes[episode.cleanUrl]) {
           this.selectAll = false
           return
         }
@@ -183,7 +183,7 @@ export default {
       this.selectAll = true
     },
     toggleSelectEpisode(episode) {
-      if (this.itemEpisodeMap[episode.cleanUrl]) return
+      if (this.getIsEpisodeDownloaded(episode)) return
       this.$set(this.selectedEpisodes, episode.cleanUrl, !this.selectedEpisodes[episode.cleanUrl])
       this.checkSetIsSelectedAll()
     },
diff --git a/server/controllers/PodcastController.js b/server/controllers/PodcastController.js
index c4112db6..22c3cafa 100644
--- a/server/controllers/PodcastController.js
+++ b/server/controllers/PodcastController.js
@@ -184,10 +184,9 @@ class PodcastController {
       Logger.error(`[PodcastController] Non-admin user attempted to download episodes`, req.user)
       return res.sendStatus(403)
     }
-    var libraryItem = req.libraryItem
-
-    var episodes = req.body
-    if (!episodes || !episodes.length) {
+    const libraryItem = req.libraryItem
+    const episodes = req.body
+    if (!episodes?.length) {
       return res.sendStatus(400)
     }
 
diff --git a/server/managers/PodcastManager.js b/server/managers/PodcastManager.js
index 5dec2152..b88a38af 100644
--- a/server/managers/PodcastManager.js
+++ b/server/managers/PodcastManager.js
@@ -201,7 +201,7 @@ class PodcastManager {
     })
     // TODO: Should we check for open playback sessions for this episode?
     // TODO: remove all user progress for this episode
-    if (oldestEpisode && oldestEpisode.audioFile) {
+    if (oldestEpisode?.audioFile) {
       Logger.info(`[PodcastManager] Deleting oldest episode "${oldestEpisode.title}"`)
       const successfullyDeleted = await removeFile(oldestEpisode.audioFile.metadata.path)
       if (successfullyDeleted) {
@@ -246,7 +246,7 @@ class PodcastManager {
     Logger.debug(`[PodcastManager] runEpisodeCheck: "${libraryItem.media.metadata.title}" checking for episodes after ${new Date(dateToCheckForEpisodesAfter)}`)
 
     var newEpisodes = await this.checkPodcastForNewEpisodes(libraryItem, dateToCheckForEpisodesAfter, libraryItem.media.maxNewEpisodesToDownload)
-    Logger.debug(`[PodcastManager] runEpisodeCheck: ${newEpisodes ? newEpisodes.length : 'N/A'} episodes found`)
+    Logger.debug(`[PodcastManager] runEpisodeCheck: ${newEpisodes?.length || 'N/A'} episodes found`)
 
     if (!newEpisodes) { // Failed
       // Allow up to MaxFailedEpisodeChecks failed attempts before disabling auto download
@@ -280,14 +280,14 @@ class PodcastManager {
       Logger.error(`[PodcastManager] checkPodcastForNewEpisodes no feed url for ${podcastLibraryItem.media.metadata.title} (ID: ${podcastLibraryItem.id})`)
       return false
     }
-    var feed = await getPodcastFeed(podcastLibraryItem.media.metadata.feedUrl)
-    if (!feed || !feed.episodes) {
+    const feed = await getPodcastFeed(podcastLibraryItem.media.metadata.feedUrl)
+    if (!feed?.episodes) {
       Logger.error(`[PodcastManager] checkPodcastForNewEpisodes invalid feed payload for ${podcastLibraryItem.media.metadata.title} (ID: ${podcastLibraryItem.id})`, feed)
       return false
     }
 
     // Filter new and not already has
-    var newEpisodes = feed.episodes.filter(ep => ep.publishedAt > dateToCheckForEpisodesAfter && !podcastLibraryItem.media.checkHasEpisodeByFeedUrl(ep.enclosure.url))
+    let newEpisodes = feed.episodes.filter(ep => ep.publishedAt > dateToCheckForEpisodesAfter && !podcastLibraryItem.media.checkHasEpisodeByFeedUrl(ep.enclosure.url))
 
     if (maxNewEpisodes > 0) {
       newEpisodes = newEpisodes.slice(0, maxNewEpisodes)
diff --git a/server/models/PodcastEpisode.js b/server/models/PodcastEpisode.js
index 6416627a..55b2f9d4 100644
--- a/server/models/PodcastEpisode.js
+++ b/server/models/PodcastEpisode.js
@@ -79,6 +79,7 @@ class PodcastEpisode extends Model {
       subtitle: this.subtitle,
       description: this.description,
       enclosure,
+      guid: this.extraData?.guid || null,
       pubDate: this.pubDate,
       chapters: this.chapters,
       audioFile: this.audioFile,
@@ -98,6 +99,9 @@ class PodcastEpisode extends Model {
     if (oldEpisode.oldEpisodeId) {
       extraData.oldEpisodeId = oldEpisode.oldEpisodeId
     }
+    if (oldEpisode.guid) {
+      extraData.guid = oldEpisode.guid
+    }
     return {
       id: oldEpisode.id,
       index: oldEpisode.index,
diff --git a/server/objects/entities/PodcastEpisode.js b/server/objects/entities/PodcastEpisode.js
index 2b91aeb6..0a8f3349 100644
--- a/server/objects/entities/PodcastEpisode.js
+++ b/server/objects/entities/PodcastEpisode.js
@@ -20,6 +20,7 @@ class PodcastEpisode {
     this.subtitle = null
     this.description = null
     this.enclosure = null
+    this.guid = null
     this.pubDate = null
     this.chapters = []
 
@@ -46,6 +47,7 @@ class PodcastEpisode {
     this.subtitle = episode.subtitle
     this.description = episode.description
     this.enclosure = episode.enclosure ? { ...episode.enclosure } : null
+    this.guid = episode.guid || null
     this.pubDate = episode.pubDate
     this.chapters = episode.chapters?.map(ch => ({ ...ch })) || []
     this.audioFile = new AudioFile(episode.audioFile)
@@ -70,6 +72,7 @@ class PodcastEpisode {
       subtitle: this.subtitle,
       description: this.description,
       enclosure: this.enclosure ? { ...this.enclosure } : null,
+      guid: this.guid,
       pubDate: this.pubDate,
       chapters: this.chapters.map(ch => ({ ...ch })),
       audioFile: this.audioFile.toJSON(),
@@ -93,6 +96,7 @@ class PodcastEpisode {
       subtitle: this.subtitle,
       description: this.description,
       enclosure: this.enclosure ? { ...this.enclosure } : null,
+      guid: this.guid,
       pubDate: this.pubDate,
       chapters: this.chapters.map(ch => ({ ...ch })),
       audioFile: this.audioFile.toJSON(),
@@ -133,6 +137,7 @@ class PodcastEpisode {
     this.pubDate = data.pubDate || ''
     this.description = data.description || ''
     this.enclosure = data.enclosure ? { ...data.enclosure } : null
+    this.guid = data.guid || null
     this.season = data.season || ''
     this.episode = data.episode || ''
     this.episodeType = data.episodeType || 'full'
diff --git a/server/utils/podcastUtils.js b/server/utils/podcastUtils.js
index 2fd684ea..0e68a0a4 100644
--- a/server/utils/podcastUtils.js
+++ b/server/utils/podcastUtils.js
@@ -4,7 +4,7 @@ const { xmlToJSON, levenshteinDistance } = require('./index')
 const htmlSanitizer = require('../utils/htmlSanitizer')
 
 function extractFirstArrayItem(json, key) {
-  if (!json[key] || !json[key].length) return null
+  if (!json[key]?.length) return null
   return json[key][0]
 }
 
@@ -110,13 +110,24 @@ function extractEpisodeData(item) {
     const pubDate = extractFirstArrayItem(item, 'pubDate')
     if (typeof pubDate === 'string') {
       episode.pubDate = pubDate
-    } else if (pubDate && typeof pubDate._ === 'string') {
+    } else if (typeof pubDate?._ === 'string') {
       episode.pubDate = pubDate._
     } else {
       Logger.error(`[podcastUtils] Invalid pubDate ${item['pubDate']} for ${episode.enclosure.url}`)
     }
   }
 
+  if (item['guid']) {
+    const guidItem = extractFirstArrayItem(item, 'guid')
+    if (typeof guidItem === 'string') {
+      episode.guid = guidItem
+    } else if (typeof guidItem?._ === 'string') {
+      episode.guid = guidItem._
+    } else {
+      Logger.error(`[podcastUtils] Invalid guid ${item['guid']} for ${episode.enclosure.url}`)
+    }
+  }
+
   const arrayFields = ['title', 'itunes:episodeType', 'itunes:season', 'itunes:episode', 'itunes:author', 'itunes:duration', 'itunes:explicit', 'itunes:subtitle']
   arrayFields.forEach((key) => {
     const cleanKey = key.split(':').pop()
@@ -142,6 +153,7 @@ function cleanEpisodeData(data) {
     explicit: data.explicit || '',
     publishedAt,
     enclosure: data.enclosure,
+    guid: data.guid || null,
     chaptersUrl: data.chaptersUrl || null,
     chaptersType: data.chaptersType || null
   }
@@ -159,16 +171,16 @@ function extractPodcastEpisodes(items) {
 }
 
 function cleanPodcastJson(rssJson, excludeEpisodeMetadata) {
-  if (!rssJson.channel || !rssJson.channel.length) {
+  if (!rssJson.channel?.length) {
     Logger.error(`[podcastUtil] Invalid podcast no channel object`)
     return null
   }
-  var channel = rssJson.channel[0]
-  if (!channel.item || !channel.item.length) {
+  const channel = rssJson.channel[0]
+  if (!channel.item?.length) {
     Logger.error(`[podcastUtil] Invalid podcast no episodes`)
     return null
   }
-  var podcast = {
+  const podcast = {
     metadata: extractPodcastMetadata(channel)
   }
   if (!excludeEpisodeMetadata) {
@@ -181,8 +193,8 @@ function cleanPodcastJson(rssJson, excludeEpisodeMetadata) {
 
 module.exports.parsePodcastRssFeedXml = async (xml, excludeEpisodeMetadata = false, includeRaw = false) => {
   if (!xml) return null
-  var json = await xmlToJSON(xml)
-  if (!json || !json.rss) {
+  const json = await xmlToJSON(xml)
+  if (!json?.rss) {
     Logger.error('[podcastUtils] Invalid XML or RSS feed')
     return null
   }
@@ -215,12 +227,12 @@ module.exports.getPodcastFeed = (feedUrl, excludeEpisodeMetadata = false) => {
       data.data = data.data.toString()
     }
 
-    if (!data || !data.data) {
+    if (!data?.data) {
       Logger.error(`[podcastUtils] getPodcastFeed: Invalid podcast feed request response (${feedUrl})`)
       return false
     }
     Logger.debug(`[podcastUtils] getPodcastFeed for "${feedUrl}" success - parsing xml`)
-    var payload = await this.parsePodcastRssFeedXml(data.data, excludeEpisodeMetadata)
+    const payload = await this.parsePodcastRssFeedXml(data.data, excludeEpisodeMetadata)
     if (!payload) {
       return false
     }
@@ -246,7 +258,7 @@ module.exports.findMatchingEpisodes = async (feedUrl, searchTitle) => {
 
 module.exports.findMatchingEpisodesInFeed = (feed, searchTitle) => {
   searchTitle = searchTitle.toLowerCase().trim()
-  if (!feed || !feed.episodes) {
+  if (!feed?.episodes) {
     return null
   }