diff --git a/.github/workflows/swift.yml b/.github/workflows/swift.yml
index 37fab09..94a6ec8 100644
--- a/.github/workflows/swift.yml
+++ b/.github/workflows/swift.yml
@@ -14,11 +14,18 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: Select Xcode
-      run: sudo xcode-select -s /Applications/Xcode_15.0.app
-    - name: Get versions
       run: |
+        sudo xcode-select -s /Applications/Xcode_15.0.app
         xcodebuild -version
-        swift --version
+    - name: Install Swift nightly toolchain
+      run: |
+        VERSION=swift-DEVELOPMENT-SNAPSHOT-2023-07-23-a
+        TOOLCHAIN_URL="https://download.swift.org/development/xcode/$VERSION/$VERSION-osx.pkg"
+        curl -LO $TOOLCHAIN_URL
+        installer -target CurrentUserHomeDirectory -pkg $VERSION-osx.pkg
+        echo "PATH=$HOME/Library/Developer/Toolchains/$VERSION.xctoolchain/usr/bin:${PATH}" >> $GITHUB_ENV
+    - name: Get Swift version
+      run: swift --version
     - name: Build
       run: swift build
     - name: Run tests
diff --git a/.swift-version b/.swift-version
new file mode 100644
index 0000000..c405a52
--- /dev/null
+++ b/.swift-version
@@ -0,0 +1 @@
+DEVELOPMENT-SNAPSHOT-2023-07-23-a
diff --git a/Benchmarks/Benchmarks/MyBenchmark/MyBenchmark.swift b/Benchmarks/Benchmarks/MyBenchmark/MyBenchmark.swift
index a8ba37d..3cd18f8 100644
--- a/Benchmarks/Benchmarks/MyBenchmark/MyBenchmark.swift
+++ b/Benchmarks/Benchmarks/MyBenchmark/MyBenchmark.swift
@@ -27,7 +27,7 @@ let benchmarks = {
 
     Benchmark("TokenizerBenchmark", configuration: .init(scalingFactor: .mega)) { benchmark in
         let sink = TestSink()
-        var tokenizer = Tokenizer(sink: consume sink)
+        var tokenizer = Tokenizer(sink: sink)
         var iter = html.makeIterator()
         benchmark.startMeasurement()
         for _ in benchmark.scaledIterations {
diff --git a/Package.swift b/Package.swift
index 064c271..fe57cc9 100644
--- a/Package.swift
+++ b/Package.swift
@@ -38,7 +38,8 @@ let package = Package(
         .testTarget(
             name: "TokenizerTests",
             dependencies: [
-                "Tokenizer"
+                "TokenizerMacros",
+                "Tokenizer",
             ]
         ),
     ]
diff --git a/README.md b/README.md
index 29f65a6..4cc1f33 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,7 @@ TODO ([The main blocker is the lack of macros support in Linux.](https://forums.
 You need:
 
 - Xcode 15 or later
+- Swift nightly toolchain
 
 And then, run the following command to build the source code.
 
diff --git a/Sources/Tokenizer/Tokenizer.swift b/Sources/Tokenizer/Tokenizer.swift
index be27a6c..600ad5c 100644
--- a/Sources/Tokenizer/Tokenizer.swift
+++ b/Sources/Tokenizer/Tokenizer.swift
@@ -470,7 +470,7 @@ public struct Tokenizer<Sink: TokenSink>: ~Copyable {
                 input = consume initial
                 return nil
             }
-            guard consume c == consume pc else {
+            guard c == pc else {
                 input = consume initial
                 return false
             }
diff --git a/Tests/TokenizerTests/TokenizerTests.swift b/Tests/TokenizerTests/TokenizerTests.swift
index e5ae6ab..f7fc1cb 100644
--- a/Tests/TokenizerTests/TokenizerTests.swift
+++ b/Tests/TokenizerTests/TokenizerTests.swift
@@ -28,7 +28,7 @@ final class TokenizerTests: XCTestCase {
         """#
 
         let sink = TestSink()
-        var tokenizer = Tokenizer(sink: consume sink)
+        var tokenizer = Tokenizer(sink: sink)
         var iter = html.makeIterator()
         tokenizer.tokenize(&iter)