diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8a940c06..2e1e2680 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -229,7 +229,7 @@ if(UNIX AND APPLE)
     set(MACOSX_BUNDLE_LONG_VERSION_STRING "${Launcher_VERSION_NAME}")
     set(MACOSX_BUNDLE_ICON_FILE ${Launcher_Name}.icns)
     set(MACOSX_BUNDLE_COPYRIGHT "Copyright 2021-2022 ${Launcher_Copyright}")
-    set(MACOSX_SPARKLE_UPDATE_PUBLIC_KEY "")
+    set(MACOSX_SPARKLE_UPDATE_PUBLIC_KEY "v55ZWWD6QlPoXGV6VLzOTZxZUggWeE51X8cRQyQh6vA=")
     set(MACOSX_SPARKLE_UPDATE_FEED_URL "https://prismlauncher.org/feed/appcast.xml")
 
     set(MACOSX_SPARKLE_DOWNLOAD_URL "https://github.com/sparkle-project/Sparkle/releases/download/2.1.0/Sparkle-2.1.0.tar.xz" CACHE STRING "URL to Sparkle release archive")