diff --git a/CHANGELOG.md b/CHANGELOG.md
index 70848bcb1..6a792ea3d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 ### Improvements
 
 - Update the Lisp, Lua, Scheme, and Tcl syntaxes to update interpreters (thanks to Renfei!).
+- [non-AppStore ver.] Update Sparkle from 2.6.3 to 2.6.4.
 
 
 ### Fixes
diff --git a/CotEditor.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved b/CotEditor.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
index b3195dd0d..0dccc75f9 100644
--- a/CotEditor.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
+++ b/CotEditor.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
@@ -5,8 +5,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/sparkle-project/Sparkle",
       "state" : {
-        "revision" : "b456fd404954a9e13f55aa0c88cd5a40b8399638",
-        "version" : "2.6.3"
+        "revision" : "0ef1ee0220239b3776f433314515fd849025673f",
+        "version" : "2.6.4"
       }
     },
     {