diff --git a/README.md b/README.md
index 3aeef86..016cc54 100644
--- a/README.md
+++ b/README.md
@@ -78,3 +78,7 @@ There are some FreshRSS extensions out there, developed by community members:
 ### By [@Victrid](https://github.com/Victrid/)
 
 * [Image Cache](https://github.com/Victrid/freshrss-image-cache-plugin): Cache feed images on your own facility or Cloudflare cache.
+
+### By [@aidistan](https://github.com/aidistan)
+
+* [SyncWithSystemTheme](https://github.com/aidistan/freshrss-extensions/tree/master/xExtension-SyncWithSystemTheme): Synchronize the theme mode with your system.
diff --git a/extensions.json b/extensions.json
index 6b7cf52..822857c 100644
--- a/extensions.json
+++ b/extensions.json
@@ -287,6 +287,17 @@
             "method": "git",
             "directory": "xExtension-StickyFeeds"
         },
+        {
+            "name": "Sync with System Theme",
+            "author": "Aidi Stan",
+            "description": "Synchronize the theme mode with your system.",
+            "version": "1.0.0",
+            "entrypoint": "SyncWithSystemTheme",
+            "type": "user",
+            "url": "https://github.com/aidistan/freshrss-extensions",
+            "method": "git",
+            "directory": "xExtension-SyncWithSystemTheme"
+        },
         {
             "name": "Teem Video Feed",
             "author": "Kevin Papst",
diff --git a/repositories.json b/repositories.json
index f34a983..68eb80e 100644
--- a/repositories.json
+++ b/repositories.json
@@ -55,4 +55,7 @@
 }, {
 	"url": "https://github.com/Victrid/freshrss-image-cache-plugin",
 	"type": "git"
+}, {
+	"url": "https://github.com/aidistan/freshrss-extensions",
+	"type": "git"
 }]