diff --git a/wowup-electron/src/app/addon-providers/tukui-addon-provider.ts b/wowup-electron/src/app/addon-providers/tukui-addon-provider.ts
index b5c1bedd..bda3f4ec 100644
--- a/wowup-electron/src/app/addon-providers/tukui-addon-provider.ts
+++ b/wowup-electron/src/app/addon-providers/tukui-addon-provider.ts
@@ -54,7 +54,9 @@ export class TukUiAddonProvider extends AddonProvider {
 
     try {
       const addons = await this.getAllAddons(clientType);
-      const filteredAddons = addons.filter((addon) => _.some(addonIds, (aid) => aid === addon.id));
+      const filteredAddons = addons.filter((addon) =>
+        _.some(addonIds, (aid) => aid.toString() === addon.id.toString())
+      );
       results = await this.mapAddonsToSearchResults(filteredAddons);
     } catch (err) {
       // _analyticsService.Track(ex, "Failed to search TukUi");
@@ -143,7 +145,7 @@ export class TukUiAddonProvider extends AddonProvider {
           name: tukUiAddon.name,
           author: tukUiAddon.author,
           downloadUrl: tukUiAddon.url,
-          externalId: tukUiAddon.id,
+          externalId: tukUiAddon.id.toString(),
           externalUrl: tukUiAddon.web_url,
           gameVersion: tukUiAddon.patch,
           installedAt: addonFolder.fileStats.birthtime,
@@ -219,7 +221,7 @@ export class TukUiAddonProvider extends AddonProvider {
 
     return {
       author: addon.author,
-      externalId: addon.id,
+      externalId: addon.id.toString(),
       name: addon.name,
       thumbnailUrl: addon.screenshot_url,
       externalUrl: addon.web_url,
diff --git a/wowup-electron/src/app/services/addons/addon.service.ts b/wowup-electron/src/app/services/addons/addon.service.ts
index 9da74d01..51c205d1 100644
--- a/wowup-electron/src/app/services/addons/addon.service.ts
+++ b/wowup-electron/src/app/services/addons/addon.service.ts
@@ -751,7 +751,7 @@ export class AddonService {
     _.forEach(newAddons, (newAddon) => {
       const existingAddon = _.find(
         existingAddons,
-        (ea) => ea.externalId == newAddon.externalId && ea.providerName == newAddon.providerName
+        (ea) => ea.externalId.toString() === newAddon.externalId.toString() && ea.providerName == newAddon.providerName
       );
 
       if (!existingAddon) {
@@ -799,9 +799,11 @@ export class AddonService {
 
     const searchResults = await addonProvider.getAll(clientType, providerAddonIds);
     for (let result of searchResults) {
-      const addon = addons.find((addon) => addon.externalId === result?.externalId);
+      const addon = addons.find((addon) => addon.externalId.toString() === result?.externalId?.toString());
       const latestFile = this.getLatestFile(result, addon?.channelType);
 
+      this.setExternalIdString(addon);
+
       addon.summary = result.summary;
       addon.thumbnailUrl = result.thumbnailUrl;
       addon.latestChangelog = latestFile?.changelog || addon.latestChangelog;
@@ -837,6 +839,16 @@ export class AddonService {
     }
   }
 
+  // Legacy TukUI/ElvUI ids were ints, correct them
+  private setExternalIdString(addon: Addon) {
+    if (typeof addon.externalId === "string") {
+      return;
+    }
+
+    addon.externalId = `${addon.externalId}`;
+    this._addonStorage.set(addon.id, addon);
+  }
+
   private getExternalIdsForProvider(addonProvider: AddonProvider, addons: Addon[]): string[] {
     return addons.filter((addon) => addon.providerName === addonProvider.name).map((addon) => addon.externalId);
   }
@@ -1207,7 +1219,7 @@ export class AddonService {
       thumbnailUrl: searchResult.thumbnailUrl,
       latestVersion: latestFile.version,
       clientType: clientType,
-      externalId: searchResult.externalId,
+      externalId: searchResult.externalId.toString(),
       gameVersion: AddonUtils.getGameVersion(latestFile.gameVersion),
       author: searchResult.author,
       downloadUrl: latestFile.downloadUrl,
diff --git a/wowup-electron/src/assets/changelog.json b/wowup-electron/src/assets/changelog.json
index bad01360..9a89ba3a 100644
--- a/wowup-electron/src/assets/changelog.json
+++ b/wowup-electron/src/assets/changelog.json
@@ -212,6 +212,10 @@
         "Add the showing of unmatched addon folders to 'My Addons'"
       ]
     },
+    {
+      "Version": "2.0.3",
+      "changes": ["Fix an issue with legacy TukUI/ElvUI external IDs saved as ints"]
+    },
     {
       "Version": "2.0.2",
       "changes": ["Fix an issue with a hardcoded hub URL"]