diff --git a/appcast/_appcast.xml b/appcast/_appcast.xml
new file mode 100644
index 0000000..280502a
--- /dev/null
+++ b/appcast/_appcast.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<rss version="2.0" xmlns:sparkle="http://www.andymatuschak.org/xml-namespaces/sparkle"> 
+  <channel>
+    <title>MacVim</title>
+    <link>https://macvim.org/appcast/latest.xml</link>
+    <description>MacVim</description>
+{% include_relative _prerelease.xml %}
+{% include_relative _release.xml %}
+{% include_relative _release_legacy.xml %}
+  </channel>
+</rss>
diff --git a/appcast/_appcast_signature.xml b/appcast/_appcast_signature.xml
new file mode 100644
index 0000000..d242f5d
--- /dev/null
+++ b/appcast/_appcast_signature.xml
@@ -0,0 +1,4 @@
+<!-- sparkle-signatures:
+edSignature: UwuYxfz+1MxV29U2H25Ojeqdxp6HrHSUmrSEMRAySf/OplUIR1xFS56vCRbbfHFW4erCpkT+0M+J5rDVHGZdBg==
+length: 37463
+-->
diff --git a/appcast/latest.xml b/appcast/latest.xml
index 7136dd5..7fdec93 100644
--- a/appcast/latest.xml
+++ b/appcast/latest.xml
@@ -1,13 +1,4 @@
 ---
 ---
-<?xml version="1.0" encoding="utf-8"?>
-<rss version="2.0" xmlns:sparkle="http://www.andymatuschak.org/xml-namespaces/sparkle"> 
-  <channel>
-    <title>MacVim</title>
-    <link>https://macvim.org/appcast/latest.xml</link>
-    <description>MacVim</description>
-{% include_relative _prerelease.xml %}
-{% include_relative _release.xml %}
-{% include_relative _release_legacy.xml %}
-  </channel>
-</rss>
+{% include_relative _appcast.xml %}
+{% include_relative _appcast_signature.xml %}
diff --git a/appcast/latest_unsigned.xml b/appcast/latest_unsigned.xml
new file mode 100644
index 0000000..506bf20
--- /dev/null
+++ b/appcast/latest_unsigned.xml
@@ -0,0 +1,3 @@
+---
+---
+{% include_relative _appcast.xml %}