Updated stable branch to revision 2.18.1
diff --git a/Formula/dart.rb b/Formula/dart.rb
index 33ac5fe..4ab8816 100644
--- a/Formula/dart.rb
+++ b/Formula/dart.rb
@@ -34,26 +34,26 @@
 
   conflicts_with "dart-beta", because: "dart-beta ships the same binaries"
   if OS.mac? && Hardware::CPU.intel?
-    url "https://storage.googleapis.com/dart-archive/channels/stable/release/2.18.0/sdk/dartsdk-macos-x64-release.zip"
-    sha256 "cf2bbaafc6a421dfc01e904a1fde702575eed4b0fd08a4a159829fa699d2471e"
+    url "https://storage.googleapis.com/dart-archive/channels/stable/release/2.18.1/sdk/dartsdk-macos-x64-release.zip"
+    sha256 "8a0f851d1e33f4e9e16af0b4427927177f26090b3c147bb8479bd51b31ce2110"
   elsif OS.mac? && Hardware::CPU.arm?
-    url "https://storage.googleapis.com/dart-archive/channels/stable/release/2.18.0/sdk/dartsdk-macos-arm64-release.zip"
-    sha256 "c1f521eab5f2f23002d135502735e1e12ad5d8342cf52bd8f0f1ad360671f9c0"
+    url "https://storage.googleapis.com/dart-archive/channels/stable/release/2.18.1/sdk/dartsdk-macos-arm64-release.zip"
+    sha256 "d5bb0c87189578fff11b8a320d159bcdf1a1ead1f47e23bd509308dadf11fa9a"
   elsif OS.linux? && Hardware::CPU.intel?
     if Hardware::CPU.is_64_bit?
-      url "https://storage.googleapis.com/dart-archive/channels/stable/release/2.18.0/sdk/dartsdk-linux-x64-release.zip"
-      sha256 "e391c4ed8f623b9748f897cb585d629057c1141f9eaf8e9b2be118932ba11632"
+      url "https://storage.googleapis.com/dart-archive/channels/stable/release/2.18.1/sdk/dartsdk-linux-x64-release.zip"
+      sha256 "7369fcbfb3c96ed85511224580a8ce0e5ecfc8227af563d396ede2055cdf84e1"
     else
-      url "https://storage.googleapis.com/dart-archive/channels/stable/release/2.18.0/sdk/dartsdk-linux-ia32-release.zip"
-      sha256 "22448959f028713d65f05da2800911f98e4f3580f93d9d23db50fc68993d2426"
+      url "https://storage.googleapis.com/dart-archive/channels/stable/release/2.18.1/sdk/dartsdk-linux-ia32-release.zip"
+      sha256 "9ddcf72e06a71494748b939052f323f7d7d18c5e9b269517f23f474b5a99eb10"
     end
   elsif OS.linux? && Hardware::CPU.arm?
     if Hardware::CPU.is_64_bit?
-      url "https://storage.googleapis.com/dart-archive/channels/stable/release/2.18.0/sdk/dartsdk-linux-arm64-release.zip"
-      sha256 "06dd7c6eb6c903f5df8b23f9a35f7b1c35ccb869be6b5019c7dd93868ae2bfbf"
+      url "https://storage.googleapis.com/dart-archive/channels/stable/release/2.18.1/sdk/dartsdk-linux-arm64-release.zip"
+      sha256 "1c8d96c0b718873f9ae6d9aa7d866cddefdb86f8b1584cbdf589670d65b7c167"
     else
-      url "https://storage.googleapis.com/dart-archive/channels/stable/release/2.18.0/sdk/dartsdk-linux-arm-release.zip"
-      sha256 "2e83b4a03a9210713a2c65d2c50bd680984c414c3c89d78baba5a20f378fac7d"
+      url "https://storage.googleapis.com/dart-archive/channels/stable/release/2.18.1/sdk/dartsdk-linux-arm-release.zip"
+      sha256 "697361b627356224903e9e4fe4e9e2600a462c56fce04f31efbcff6a44ee47b7"
     end
   end