diff --git a/docs/appcast.xml b/docs/appcast.xml
index cf78bfcf..5eb99980 100644
--- a/docs/appcast.xml
+++ b/docs/appcast.xml
@@ -10,23 +10,6 @@
         <link>https://mxiris-reverse-engineering.github.io/RuntimeViewer/appcast.xml</link>
         <description>RuntimeViewer release feed</description>
         <language>en</language>
-        <item>
-            <title>2.1.0</title>
-            <pubDate>Wed, 12 Aug 2026 03:35:55 +0000</pubDate>
-            <sparkle:version>20260812.02.42</sparkle:version>
-            <sparkle:shortVersionString>2.1.0</sparkle:shortVersionString>
-            <sparkle:minimumSystemVersion>15.0</sparkle:minimumSystemVersion>
-            <enclosure url="https://github.com/MxIris-Reverse-Engineering/RuntimeViewer/releases/download/v2.1.0/RuntimeViewer-macOS.zip" length="56688010" type="application/octet-stream" sparkle:edSignature="M9gPE29/5hZ8GIwASww+gDs5O42kVl1mzsCuvaChkimsAiDAL1aIUFJfpwgLrjOP7r0AMNg7hQ1n0Rzfb32tBQ=="/>
-        </item>
-        <item>
-            <title>2.1.0</title>
-            <pubDate>Tue, 11 Aug 2026 14:53:44 +0000</pubDate>
-            <sparkle:channel>beta</sparkle:channel>
-            <sparkle:version>20260811.14.06</sparkle:version>
-            <sparkle:shortVersionString>2.1.0</sparkle:shortVersionString>
-            <sparkle:minimumSystemVersion>15.0</sparkle:minimumSystemVersion>
-            <enclosure url="https://github.com/MxIris-Reverse-Engineering/RuntimeViewer/releases/download/v2.1.0-RC.3/RuntimeViewer-macOS.zip" length="56688095" type="application/octet-stream" sparkle:edSignature="aWR12Pu5BvG7Za/EGCnDAxFSHM915CXMTwctXGo1YiQF5wnChXAEK/jFcBrktJcNVieVIuI7MpLyz3I/f0CeDA=="/>
-        </item>
         <item>
             <title>2.0.1</title>
             <pubDate>Fri, 01 May 2026 14:50:02 +0000</pubDate>