diff --git a/GCDWebServer/Core/GCDWebServer.m b/GCDWebServer/Core/GCDWebServer.m
index cb1b295..655b2bd 100644
--- a/GCDWebServer/Core/GCDWebServer.m
+++ b/GCDWebServer/Core/GCDWebServer.m
@@ -876,13 +876,14 @@ static inline NSString* _EncodeBase64(NSString* string) {
 }
 
 - (void)addDefaultHandlerForMethod:(NSString*)method requestClass:(Class)aClass asyncProcessBlock:(GCDWebServerAsyncProcessBlock)block {
-  [self addHandlerWithMatchBlock:^GCDWebServerRequest*(NSString* requestMethod, NSURL* requestURL, NSDictionary<NSString*, NSString*>* requestHeaders, NSString* urlPath, NSDictionary<NSString*, NSString*>* urlQuery) {
-    if (![requestMethod isEqualToString:method]) {
-      return nil;
-    }
-    return [(GCDWebServerRequest*)[aClass alloc] initWithMethod:requestMethod url:requestURL headers:requestHeaders path:urlPath query:urlQuery];
-  }
-               asyncProcessBlock:block];
+  [self
+      addHandlerWithMatchBlock:^GCDWebServerRequest*(NSString* requestMethod, NSURL* requestURL, NSDictionary<NSString*, NSString*>* requestHeaders, NSString* urlPath, NSDictionary<NSString*, NSString*>* urlQuery) {
+        if (![requestMethod isEqualToString:method]) {
+          return nil;
+        }
+        return [(GCDWebServerRequest*)[aClass alloc] initWithMethod:requestMethod url:requestURL headers:requestHeaders path:urlPath query:urlQuery];
+      }
+             asyncProcessBlock:block];
 }
 
 - (void)addHandlerForMethod:(NSString*)method path:(NSString*)path requestClass:(Class)aClass processBlock:(GCDWebServerProcessBlock)block {
@@ -896,16 +897,17 @@ static inline NSString* _EncodeBase64(NSString* string) {
 
 - (void)addHandlerForMethod:(NSString*)method path:(NSString*)path requestClass:(Class)aClass asyncProcessBlock:(GCDWebServerAsyncProcessBlock)block {
   if ([path hasPrefix:@"/"] && [aClass isSubclassOfClass:[GCDWebServerRequest class]]) {
-    [self addHandlerWithMatchBlock:^GCDWebServerRequest*(NSString* requestMethod, NSURL* requestURL, NSDictionary<NSString*, NSString*>* requestHeaders, NSString* urlPath, NSDictionary<NSString*, NSString*>* urlQuery) {
-      if (![requestMethod isEqualToString:method]) {
-        return nil;
-      }
-      if ([urlPath caseInsensitiveCompare:path] != NSOrderedSame) {
-        return nil;
-      }
-      return [(GCDWebServerRequest*)[aClass alloc] initWithMethod:requestMethod url:requestURL headers:requestHeaders path:urlPath query:urlQuery];
-    }
-                 asyncProcessBlock:block];
+    [self
+        addHandlerWithMatchBlock:^GCDWebServerRequest*(NSString* requestMethod, NSURL* requestURL, NSDictionary<NSString*, NSString*>* requestHeaders, NSString* urlPath, NSDictionary<NSString*, NSString*>* urlQuery) {
+          if (![requestMethod isEqualToString:method]) {
+            return nil;
+          }
+          if ([urlPath caseInsensitiveCompare:path] != NSOrderedSame) {
+            return nil;
+          }
+          return [(GCDWebServerRequest*)[aClass alloc] initWithMethod:requestMethod url:requestURL headers:requestHeaders path:urlPath query:urlQuery];
+        }
+               asyncProcessBlock:block];
   } else {
     GWS_DNOT_REACHED();
   }
@@ -923,34 +925,35 @@ static inline NSString* _EncodeBase64(NSString* string) {
 - (void)addHandlerForMethod:(NSString*)method pathRegex:(NSString*)regex requestClass:(Class)aClass asyncProcessBlock:(GCDWebServerAsyncProcessBlock)block {
   NSRegularExpression* expression = [NSRegularExpression regularExpressionWithPattern:regex options:NSRegularExpressionCaseInsensitive error:NULL];
   if (expression && [aClass isSubclassOfClass:[GCDWebServerRequest class]]) {
-    [self addHandlerWithMatchBlock:^GCDWebServerRequest*(NSString* requestMethod, NSURL* requestURL, NSDictionary<NSString*, NSString*>* requestHeaders, NSString* urlPath, NSDictionary<NSString*, NSString*>* urlQuery) {
-      if (![requestMethod isEqualToString:method]) {
-        return nil;
-      }
-
-      NSArray* matches = [expression matchesInString:urlPath options:0 range:NSMakeRange(0, urlPath.length)];
-      if (matches.count == 0) {
-        return nil;
-      }
-
-      NSMutableArray* captures = [NSMutableArray array];
-      for (NSTextCheckingResult* result in matches) {
-        // Start at 1; index 0 is the whole string
-        for (NSUInteger i = 1; i < result.numberOfRanges; i++) {
-          NSRange range = [result rangeAtIndex:i];
-          // range is {NSNotFound, 0} "if one of the capture groups did not participate in this particular match"
-          // see discussion in -[NSRegularExpression firstMatchInString:options:range:]
-          if (range.location != NSNotFound) {
-            [captures addObject:[urlPath substringWithRange:range]];
+    [self
+        addHandlerWithMatchBlock:^GCDWebServerRequest*(NSString* requestMethod, NSURL* requestURL, NSDictionary<NSString*, NSString*>* requestHeaders, NSString* urlPath, NSDictionary<NSString*, NSString*>* urlQuery) {
+          if (![requestMethod isEqualToString:method]) {
+            return nil;
           }
-        }
-      }
 
-      GCDWebServerRequest* request = [(GCDWebServerRequest*)[aClass alloc] initWithMethod:requestMethod url:requestURL headers:requestHeaders path:urlPath query:urlQuery];
-      [request setAttribute:captures forKey:GCDWebServerRequestAttribute_RegexCaptures];
-      return request;
-    }
-                 asyncProcessBlock:block];
+          NSArray* matches = [expression matchesInString:urlPath options:0 range:NSMakeRange(0, urlPath.length)];
+          if (matches.count == 0) {
+            return nil;
+          }
+
+          NSMutableArray* captures = [NSMutableArray array];
+          for (NSTextCheckingResult* result in matches) {
+            // Start at 1; index 0 is the whole string
+            for (NSUInteger i = 1; i < result.numberOfRanges; i++) {
+              NSRange range = [result rangeAtIndex:i];
+              // range is {NSNotFound, 0} "if one of the capture groups did not participate in this particular match"
+              // see discussion in -[NSRegularExpression firstMatchInString:options:range:]
+              if (range.location != NSNotFound) {
+                [captures addObject:[urlPath substringWithRange:range]];
+              }
+            }
+          }
+
+          GCDWebServerRequest* request = [(GCDWebServerRequest*)[aClass alloc] initWithMethod:requestMethod url:requestURL headers:requestHeaders path:urlPath query:urlQuery];
+          [request setAttribute:captures forKey:GCDWebServerRequestAttribute_RegexCaptures];
+          return request;
+        }
+               asyncProcessBlock:block];
   } else {
     GWS_DNOT_REACHED();
   }
@@ -1021,15 +1024,16 @@ static inline NSString* _EncodeBase64(NSString* string) {
 - (void)addGETHandlerForBasePath:(NSString*)basePath directoryPath:(NSString*)directoryPath indexFilename:(NSString*)indexFilename cacheAge:(NSUInteger)cacheAge allowRangeRequests:(BOOL)allowRangeRequests {
   if ([basePath hasPrefix:@"/"] && [basePath hasSuffix:@"/"]) {
     GCDWebServer* __unsafe_unretained server = self;
-    [self addHandlerWithMatchBlock:^GCDWebServerRequest*(NSString* requestMethod, NSURL* requestURL, NSDictionary<NSString*, NSString*>* requestHeaders, NSString* urlPath, NSDictionary<NSString*, NSString*>* urlQuery) {
-      if (![requestMethod isEqualToString:@"GET"]) {
-        return nil;
-      }
-      if (![urlPath hasPrefix:basePath]) {
-        return nil;
-      }
-      return [[GCDWebServerRequest alloc] initWithMethod:requestMethod url:requestURL headers:requestHeaders path:urlPath query:urlQuery];
-    }
+    [self
+        addHandlerWithMatchBlock:^GCDWebServerRequest*(NSString* requestMethod, NSURL* requestURL, NSDictionary<NSString*, NSString*>* requestHeaders, NSString* urlPath, NSDictionary<NSString*, NSString*>* urlQuery) {
+          if (![requestMethod isEqualToString:@"GET"]) {
+            return nil;
+          }
+          if (![urlPath hasPrefix:basePath]) {
+            return nil;
+          }
+          return [[GCDWebServerRequest alloc] initWithMethod:requestMethod url:requestURL headers:requestHeaders path:urlPath query:urlQuery];
+        }
         processBlock:^GCDWebServerResponse*(GCDWebServerRequest* request) {
           GCDWebServerResponse* response = nil;
           NSString* filePath = [directoryPath stringByAppendingPathComponent:GCDWebServerNormalizePath([request.path substringFromIndex:basePath.length])];
diff --git a/GCDWebServer/Core/GCDWebServerConnection.m b/GCDWebServer/Core/GCDWebServerConnection.m
index 77a0896..5740794 100644
--- a/GCDWebServer/Core/GCDWebServerConnection.m
+++ b/GCDWebServer/Core/GCDWebServerConnection.m
@@ -794,8 +794,8 @@ static inline BOOL _CompareResources(NSString* responseETag, NSString* requestET
   GWS_DCHECK(_responseMessage == NULL);
   GWS_DCHECK((statusCode >= 400) && (statusCode < 600));
   [self _initializeResponseHeadersWithStatusCode:statusCode];
-  [self writeHeadersWithCompletionBlock:^(BOOL success) {
-    // Nothing more to do
+  [self writeHeadersWithCompletionBlock:^(BOOL success){
+      // Nothing more to do
   }];
   GWS_LOG_DEBUG(@"Connection aborted with status code %i on socket %i", (int)statusCode, _socket);
 }
diff --git a/Mac/main.m b/Mac/main.m
index 9bcf013..7a4d5b0 100644
--- a/Mac/main.m
+++ b/Mac/main.m
@@ -380,7 +380,7 @@ int main(int argc, const char* argv[]) {
         webServer.delegate = delegate;
 #endif
         fprintf(stdout, "<RUNNING TESTS FROM \"%s\">\n\n", [testDirectory UTF8String]);
-        result = (int)[webServer runTestsWithOptions:@{ GCDWebServerOption_Port : @8080 } inDirectory:testDirectory];
+        result = (int)[webServer runTestsWithOptions:@{GCDWebServerOption_Port : @8080} inDirectory:testDirectory];
       } else {
         webServer.delegate = delegate;
         if (recording) {
diff --git a/format-source.sh b/format-source.sh
index 4c35aa7..027ce7e 100755
--- a/format-source.sh
+++ b/format-source.sh
@@ -2,17 +2,19 @@
 
 # brew install clang-format
 
+SWIFT_FORMAT_VERSION='0.44.5'
+
 CLANG_FORMAT_VERSION=`clang-format -version | awk '{ print $3 }'`
-if [[ "$CLANG_FORMAT_VERSION" != "7.0.0" ]]; then
+if [[ "$CLANG_FORMAT_VERSION" != "9.0.0" ]]; then
   echo "Unsupported clang-format version"
   exit 1
 fi
 
 if [[ ! -f "build/swiftformat" ]]; then
   mkdir -p "build"
-  curl -sfL -o "build/SwiftFormat.zip" "https://github.com/nicklockwood/SwiftFormat/archive/0.37.2.zip"
-  unzip "build/SwiftFormat.zip" "SwiftFormat-0.37.2/CommandLineTool/swiftformat" -d "build"
-  mv "build/SwiftFormat-0.37.2/CommandLineTool/swiftformat" "build/swiftformat"
+  curl -sfL -o "build/SwiftFormat.zip" "https://github.com/nicklockwood/SwiftFormat/archive/$SWIFT_FORMAT_VERSION.zip"
+  unzip "build/SwiftFormat.zip" "SwiftFormat-$SWIFT_FORMAT_VERSION/CommandLineTool/swiftformat" -d "build"
+  mv "build/SwiftFormat-$SWIFT_FORMAT_VERSION/CommandLineTool/swiftformat" "build/swiftformat"
 fi
 
 pushd "GCDWebServer/Core"