diff --git a/Package.resolved b/Package.resolved
index fc9dd94..fc2125b 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -51,17 +51,26 @@
         "repositoryURL": "https://github.com/apple/swift-argument-parser.git",
         "state": {
           "branch": null,
-          "revision": "986d191f94cec88f6350056da59c2e59e83d1229",
-          "version": "0.4.3"
+          "revision": "46989693916f56d1186bd59ac15124caef896560",
+          "version": "1.3.1"
+        }
+      },
+      {
+        "package": "cmark-gfm",
+        "repositoryURL": "https://github.com/apple/swift-cmark.git",
+        "state": {
+          "branch": null,
+          "revision": "f218e5d7691f78b55bfa39b367763f4612486c35",
+          "version": "0.3.0"
         }
       },
       {
         "package": "swift-format",
         "repositoryURL": "https://github.com/apple/swift-format.git",
         "state": {
-          "branch": "swift-5.4-branch",
-          "revision": "9c15831b798d767c9af0927a931de5d557004936",
-          "version": null
+          "branch": null,
+          "revision": "7996ac678197d293f6c088a1e74bb778b4e10139",
+          "version": "510.1.0"
         }
       },
       {
@@ -74,12 +83,21 @@
         }
       },
       {
-        "package": "SwiftSyntax",
+        "package": "swift-markdown",
+        "repositoryURL": "https://github.com/apple/swift-markdown.git",
+        "state": {
+          "branch": null,
+          "revision": "e4f95e2dc23097a1a9a1dfdfe3fe3ee44de77378",
+          "version": "0.3.0"
+        }
+      },
+      {
+        "package": "swift-syntax",
         "repositoryURL": "https://github.com/apple/swift-syntax",
         "state": {
           "branch": null,
-          "revision": "2fff9fc25cdc059379b6bd309377cfab45d8520c",
-          "version": "0.50400.0"
+          "revision": "303e5c5c36d6a558407d364878df131c3546fad8",
+          "version": "510.0.2"
         }
       },
       {
diff --git a/Package.swift b/Package.swift
index d2dfebd..a665df7 100644
--- a/Package.swift
+++ b/Package.swift
@@ -16,7 +16,7 @@ let package = Package(
 
         .package(url: "https://github.com/kylef/Commander.git", from: "0.9.0"),
 
-        .package(url: "https://github.com/apple/swift-format.git", .branch("swift-5.4-branch")),
+        .package(url: "https://github.com/apple/swift-format.git", from: "510.1.0"),
     ],
     targets: [
         .target(name: "SwiftNES"),
diff --git a/Tests/SwiftNESTests/CPU/CPUEmulatorSpec.swift b/Tests/SwiftNESTests/CPU/CPUEmulatorSpec.swift
index a6b8395..598ccc7 100644
--- a/Tests/SwiftNESTests/CPU/CPUEmulatorSpec.swift
+++ b/Tests/SwiftNESTests/CPU/CPUEmulatorSpec.swift
@@ -51,7 +51,6 @@ class CPUEmulatorSpec: QuickSpec {
             }
         }
 
-
         describe("stack") {
 
             it("push data, and pull the same") {
@@ -79,7 +78,7 @@ class CPUEmulatorSpec: QuickSpec {
     }
 }
 
-class CPUEmulatorStub : CPUEmulator {
+class CPUEmulatorStub: CPUEmulator {
     var cpu = CPU()
     var mem = [UInt8](repeating: 0x00, count: 65536)
 
diff --git a/Tests/SwiftNESTests/CPU/CPUInstructionsSpec.swift b/Tests/SwiftNESTests/CPU/CPUInstructionsSpec.swift
index 0cfb61f..96cab5b 100644
--- a/Tests/SwiftNESTests/CPU/CPUInstructionsSpec.swift
+++ b/Tests/SwiftNESTests/CPU/CPUInstructionsSpec.swift
@@ -1518,7 +1518,6 @@ class InstructionSpec: QuickSpec {
     }
 }
 
-
 extension CPUEmulator {
     fileprivate func step(interruptLine: InterruptLine) -> UInt {
         let before = cpu.cycles