diff --git a/Package.resolved b/Package.resolved
index ad0c42e..0c38410 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -29,21 +29,12 @@
         }
       },
       {
-        "package": "llbuild",
-        "repositoryURL": "https://github.com/apple/swift-llbuild.git",
+        "package": "swift-tools-support-core",
+        "repositoryURL": "https://github.com/apple/swift-tools-support-core.git",
         "state": {
           "branch": null,
-          "revision": "f73b84bc1525998e5e267f9d830c1411487ac65e",
-          "version": "0.2.0"
-        }
-      },
-      {
-        "package": "SwiftPM",
-        "repositoryURL": "https://github.com/apple/swift-package-manager",
-        "state": {
-          "branch": null,
-          "revision": "9abcc2260438177cecd7cf5185b144d13e74122b",
-          "version": "0.5.0"
+          "revision": "81e2cda46447b4d78c18e03b0d284d76950f7c2b",
+          "version": "0.1.5"
         }
       },
       {
diff --git a/Package.swift b/Package.swift
index 38c44be..ef4cb93 100644
--- a/Package.swift
+++ b/Package.swift
@@ -23,7 +23,7 @@ let package = Package(
         ),
     ],
     dependencies: [
-        .package(url: "https://github.com/apple/swift-package-manager", .upToNextMajor(from: "0.5.0")),
+        .package(url: "https://github.com/apple/swift-tools-support-core.git", .upToNextMajor(from: "0.1.0")),
         .package(url: "https://github.com/kylef/PathKit", .upToNextMinor(from: "1.0.0")),
         .package(url: "https://github.com/tuist/xcodeproj.git", .upToNextMajor(from: "7.8.0")),
     ],
@@ -34,7 +34,7 @@ let package = Package(
         ),
         .target(
             name: "XCDiffCommand",
-            dependencies: ["PathKit", "SPMUtility", "XCDiffCore"]
+            dependencies: ["PathKit", "SwiftToolsSupport-auto", "XCDiffCore"]
         ),
         .target(
             name: "XCDiffCore",
diff --git a/Sources/XCDiffCommand/CommandRunner.swift b/Sources/XCDiffCommand/CommandRunner.swift
index 78a5f14..3011c72 100644
--- a/Sources/XCDiffCommand/CommandRunner.swift
+++ b/Sources/XCDiffCommand/CommandRunner.swift
@@ -15,10 +15,10 @@
 //
 
 // swiftlint:disable type_body_length
-import Basic
 import Foundation
 import PathKit
-import SPMUtility
+import TSCBasic
+import TSCUtility
 import XCDiffCore
 
 public final class CommandRunner {
diff --git a/Sources/XCDiffCommand/Constants.swift b/Sources/XCDiffCommand/Constants.swift
index 8689d21..e906060 100644
--- a/Sources/XCDiffCommand/Constants.swift
+++ b/Sources/XCDiffCommand/Constants.swift
@@ -14,9 +14,9 @@
 // limitations under the License.
 //
 
-import Basic
 import Foundation
-import SPMUtility
+import TSCBasic
+import TSCUtility
 
 final class Constants {
     static let version: Version = {