diff --git a/Tests/OpenAPIAsyncHTTPClientTests/Test_AsyncHTTPClientTransport.swift b/Tests/OpenAPIAsyncHTTPClientTests/Test_AsyncHTTPClientTransport.swift
index e899261..4a627a4 100644
--- a/Tests/OpenAPIAsyncHTTPClientTests/Test_AsyncHTTPClientTransport.swift
+++ b/Tests/OpenAPIAsyncHTTPClientTests/Test_AsyncHTTPClientTransport.swift
@@ -118,8 +118,8 @@ class Test_AsyncHTTPClientTransport: XCTestCase {
 
 struct TestSender: HTTPRequestSending {
     var sendClosure:
-        @Sendable (AsyncHTTPClientTransport.Request, HTTPClient, TimeAmount) async throws -> AsyncHTTPClientTransport
-            .Response
+        @Sendable (AsyncHTTPClientTransport.Request, HTTPClient, TimeAmount) async throws ->
+            AsyncHTTPClientTransport.Response
     func send(
         request: AsyncHTTPClientTransport.Request,
         with client: HTTPClient,
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 4b7014a..3cc66ea 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -17,7 +17,7 @@ RUN mkdir -p $HOME/.tools
 RUN echo 'export PATH="$HOME/.tools:$PATH"' >> $HOME/.profile
 
 # swift-format
-ARG swiftformat_version=508.0.0
+ARG swiftformat_version=509.0.0
 RUN git clone --branch $swiftformat_version --depth 1 https://github.com/apple/swift-format $HOME/.tools/swift-format-source
 RUN cd $HOME/.tools/swift-format-source && swift build -c release
-RUN ln -s $HOME/.tools/swift-format-source/.build/release/swift-format $HOME/.tools/swift-format
\ No newline at end of file
+RUN ln -s $HOME/.tools/swift-format-source/.build/release/swift-format $HOME/.tools/swift-format