diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index ef9ca1326..3f946796e 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -10,7 +10,7 @@ on:
 jobs:
     soundness:
         name: Soundness
-        uses: swiftlang/github-workflows/.github/workflows/soundness.yml@0.0.7
+        uses: swiftlang/github-workflows/.github/workflows/soundness.yml@0.0.13
         with:
             license_header_check_project_name: "AsyncHTTPClient"
     unit-tests:
diff --git a/Sources/AsyncHTTPClient/HTTPHandler.swift b/Sources/AsyncHTTPClient/HTTPHandler.swift
index 4c4cc6f9a..1be979e68 100644
--- a/Sources/AsyncHTTPClient/HTTPHandler.swift
+++ b/Sources/AsyncHTTPClient/HTTPHandler.swift
@@ -628,20 +628,20 @@ public final class ResponseAccumulator: HTTPClientResponseDelegate {
         }
     }
 
-    public func didReceiveBodyPart(task: HTTPClient.Task<Response>, _ part: ByteBuffer) -> EventLoopFuture<Void> {
+    public func didReceiveBodyPart(task: HTTPClient.Task<Response>, _ buffer: ByteBuffer) -> EventLoopFuture<Void> {
         self.state.withLockedValue {
             switch $0.state {
             case .idle:
                 preconditionFailure("no head received before body")
             case .head(let head):
-                guard part.readableBytes <= self.maxBodySize else {
+                guard buffer.readableBytes <= self.maxBodySize else {
                     let error = ResponseTooBigError(maxBodySize: self.maxBodySize)
                     $0.state = .error(error)
                     return task.eventLoop.makeFailedFuture(error)
                 }
-                $0.state = .body(head, part)
+                $0.state = .body(head, buffer)
             case .body(let head, var body):
-                let newBufferSize = body.writerIndex + part.readableBytes
+                let newBufferSize = body.writerIndex + buffer.readableBytes
                 guard newBufferSize <= self.maxBodySize else {
                     let error = ResponseTooBigError(maxBodySize: self.maxBodySize)
                     $0.state = .error(error)
@@ -653,8 +653,8 @@ public final class ResponseAccumulator: HTTPClientResponseDelegate {
                 // `self.state` or we'll get a CoW. To fix that we temporarily set the state to `.end` (which
                 // has no associated data). We'll fix it at the bottom of this block.
                 $0.state = .end
-                var part = part
-                body.writeBuffer(&part)
+                var buffer = buffer
+                body.writeBuffer(&buffer)
                 $0.state = .body(head, body)
             case .end:
                 preconditionFailure("request already processed")
diff --git a/Sources/AsyncHTTPClient/NIOTransportServices/NWErrorHandler.swift b/Sources/AsyncHTTPClient/NIOTransportServices/NWErrorHandler.swift
index 704329b89..338fd8951 100644
--- a/Sources/AsyncHTTPClient/NIOTransportServices/NWErrorHandler.swift
+++ b/Sources/AsyncHTTPClient/NIOTransportServices/NWErrorHandler.swift
@@ -32,7 +32,7 @@ extension HTTPClient {
 
         /// Initialise a NWPOSIXError
         /// - Parameters:
-        ///   - errorType: posix error type
+        ///   - errorCode: posix error code
         ///   - reason: String describing reason for error
         public init(_ errorCode: POSIXErrorCode, reason: String) {
             self.errorCode = errorCode
diff --git a/Sources/AsyncHTTPClient/Utils.swift b/Sources/AsyncHTTPClient/Utils.swift
index 985755143..43f711d5c 100644
--- a/Sources/AsyncHTTPClient/Utils.swift
+++ b/Sources/AsyncHTTPClient/Utils.swift
@@ -32,6 +32,9 @@ public final class HTTPClientCopyingDelegate: HTTPClientResponseDelegate, Sendab
         self.chunkHandler(buffer)
     }
 
+    /// Called when the complete HTTP request is finished.
+    ///
+    /// The body was already handed to the `chunkHandler` as it arrived, so there is nothing to return.
     public func didFinishRequest(task: HTTPClient.Task<Void>) throws {
         ()
     }