diff --git a/Package.resolved b/Package.resolved
index bea10ba..ef2401b 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -60,16 +60,16 @@
         "repositoryURL": "https://github.com/apple/swift-argument-parser.git",
         "state": {
           "branch": null,
-          "revision": "e1465042f195f374b94f915ba8ca49de24300a0d",
-          "version": "1.0.2"
+          "revision": "df9ee6676cd5b3bf5b330ec7568a5644f547201b",
+          "version": "1.1.3"
         }
       },
       {
         "package": "swift-format",
         "repositoryURL": "https://github.com/apple/swift-format",
         "state": {
-          "branch": "swift-5.5-branch",
-          "revision": "f872223e16742fd97fabd319fbf4a939230cc796",
+          "branch": "release/5.6",
+          "revision": "e6b8c60c7671066d229e30efa1e31acf57be412e",
           "version": null
         }
       },
@@ -78,8 +78,26 @@
         "repositoryURL": "https://github.com/apple/swift-syntax",
         "state": {
           "branch": null,
-          "revision": "75e60475d9d8fd5bbc16a12e0eaa2cb01b0c322e",
-          "version": "0.50500.0"
+          "revision": "0b6c22b97f8e9320bca62e82cdbee601cf37ad3f",
+          "version": "0.50600.1"
+        }
+      },
+      {
+        "package": "swift-system",
+        "repositoryURL": "https://github.com/apple/swift-system.git",
+        "state": {
+          "branch": null,
+          "revision": "836bc4557b74fe6d2660218d56e3ce96aff76574",
+          "version": "1.1.1"
+        }
+      },
+      {
+        "package": "swift-tools-support-core",
+        "repositoryURL": "https://github.com/apple/swift-tools-support-core.git",
+        "state": {
+          "branch": null,
+          "revision": "b7667f3e266af621e5cc9c77e74cacd8e8c00cb4",
+          "version": "0.2.5"
         }
       },
       {
diff --git a/Package.swift b/Package.swift
index 404a534..2918211 100644
--- a/Package.swift
+++ b/Package.swift
@@ -70,7 +70,12 @@ let package = Package(
     swiftLanguageVersions: [.v5]
 )
 
-#if compiler(>=5.5)
+// https://github.com/apple/swift-format#matching-swift-format-to-your-swift-version
+#if compiler(>=5.6)
+    package.dependencies += [
+        .package(url: "https://github.com/apple/swift-format", .branch("release/5.6"))
+    ]
+#elseif compiler(>=5.5)
     package.dependencies += [
         .package(url: "https://github.com/apple/swift-format", .branch("swift-5.5-branch"))
     ]