diff --git a/src/lib/requests/RequestManager.ts b/src/lib/requests/RequestManager.ts
index d9c06693..fe42f1de 100644
--- a/src/lib/requests/RequestManager.ts
+++ b/src/lib/requests/RequestManager.ts
@@ -380,6 +380,10 @@ export class RequestManager {
         this.cache.clearFor(...cacheKeys);
     }
 
+    public clearExtensionCache() {
+        this.cache.clearFor(this.cache.getKeyFor(EXTENSION_LIST_CACHE_KEY, undefined));
+    }
+
     private createAbortController(): { signal: AbortSignal } & AbortableRequest {
         const abortController = new AbortController();
         const abortRequest = (reason?: any): void => {
diff --git a/src/screens/settings/ServerSettings.tsx b/src/screens/settings/ServerSettings.tsx
index fe694c12..88939225 100644
--- a/src/screens/settings/ServerSettings.tsx
+++ b/src/screens/settings/ServerSettings.tsx
@@ -144,7 +144,10 @@ export const ServerSettings = () => {
                             You as the user need to verify the security and that you trust any repository or extension.
                         </Trans>
                     }
-                    handleChange={(repos) => updateSetting('extensionRepos', repos)}
+                    handleChange={(repos) => {
+                        updateSetting('extensionRepos', repos);
+                        requestManager.clearExtensionCache();
+                    }}
                     values={serverSettings?.extensionRepos}
                     addItemButtonTitle={t('extension.settings.repositories.custom.dialog.action.button.add')}
                     placeholder="https://github.com/MY_ACCOUNT/MY_REPO/tree/repo"