diff --git a/Packages/CandidateUI/Package.swift b/Packages/CandidateUI/Package.swift
index b31be3b0..65fad68a 100644
--- a/Packages/CandidateUI/Package.swift
+++ b/Packages/CandidateUI/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.5
+// swift-tools-version:5.3
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
diff --git a/Packages/CandidateUI/Sources/CandidateUI/HorizontalCandidateController.swift b/Packages/CandidateUI/Sources/CandidateUI/HorizontalCandidateController.swift
index 05d67a42..c9cab45f 100644
--- a/Packages/CandidateUI/Sources/CandidateUI/HorizontalCandidateController.swift
+++ b/Packages/CandidateUI/Sources/CandidateUI/HorizontalCandidateController.swift
@@ -364,7 +364,7 @@ extension HorizontalCandidateController {
 
         if pageCount > 1 {
             var buttonRect = nextPageButton.frame
-            var spacing = 0.0
+            var spacing:CGFloat = 0.0
 
             if newSize.height < 40.0 {
                 buttonRect.size.height = floor(newSize.height / 2)
diff --git a/Packages/CandidateUI/Sources/CandidateUI/VerticalCandidateController.swift b/Packages/CandidateUI/Sources/CandidateUI/VerticalCandidateController.swift
index dd994872..9f01ace7 100644
--- a/Packages/CandidateUI/Sources/CandidateUI/VerticalCandidateController.swift
+++ b/Packages/CandidateUI/Sources/CandidateUI/VerticalCandidateController.swift
@@ -91,10 +91,10 @@ fileprivate class VerticalCandidateTableView: NSTableView {
     }
 }
 
-private let kCandidateTextPadding = 24.0
-private let kCandidateTextLeftMargin = 8.0
-private let kCandidateTextPaddingWithMandatedTableViewPadding = 18.0
-private let kCandidateTextLeftMarginWithMandatedTableViewPadding = 0.0
+private let kCandidateTextPadding:CGFloat = 24.0
+private let kCandidateTextLeftMargin:CGFloat = 8.0
+private let kCandidateTextPaddingWithMandatedTableViewPadding:CGFloat = 18.0
+private let kCandidateTextLeftMarginWithMandatedTableViewPadding:CGFloat = 0.0
 
 
 @objc (VTVerticalCandidateController)
diff --git a/Packages/InputSourceHelper/Package.swift b/Packages/InputSourceHelper/Package.swift
index 4543d050..128f25c2 100644
--- a/Packages/InputSourceHelper/Package.swift
+++ b/Packages/InputSourceHelper/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.5
+// swift-tools-version:5.3
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
diff --git a/Packages/NotifierUI/Package.swift b/Packages/NotifierUI/Package.swift
index c25baecb..75be895d 100644
--- a/Packages/NotifierUI/Package.swift
+++ b/Packages/NotifierUI/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.5
+// swift-tools-version:5.3
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
diff --git a/Packages/OpenCCBridge/Package.swift b/Packages/OpenCCBridge/Package.swift
index 5035ce30..61faf8f7 100644
--- a/Packages/OpenCCBridge/Package.swift
+++ b/Packages/OpenCCBridge/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.5
+// swift-tools-version:5.3
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
@@ -14,7 +14,7 @@ let package = Package(
     dependencies: [
         // Dependencies declare other packages that this package depends on.
         // .package(url: /* package url */, from: "1.0.0"),
-        .package(name: "SwiftyOpenCC", url: "https://github.com/ddddxxx/SwiftyOpenCC.git", revision: "a802c02cbf1c6fcd529575f11a9876d94fc813f4")
+        .package(name: "SwiftyOpenCC", url: "https://github.com/ddddxxx/SwiftyOpenCC.git", from: "2.0.0-beta")
         
     ],
     targets: [
diff --git a/Packages/TooltipUI/Package.swift b/Packages/TooltipUI/Package.swift
index a708808e..073410d8 100644
--- a/Packages/TooltipUI/Package.swift
+++ b/Packages/TooltipUI/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.5
+// swift-tools-version:5.3
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
diff --git a/Packages/VXHanConvert/Package.swift b/Packages/VXHanConvert/Package.swift
index 7b3f641c..47fdc5dc 100644
--- a/Packages/VXHanConvert/Package.swift
+++ b/Packages/VXHanConvert/Package.swift
@@ -1,4 +1,4 @@
-// swift-tools-version:5.5
+// swift-tools-version:5.3
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription