diff --git a/Formula/dart-beta.rb b/Formula/dart-beta.rb
index b296dbb..ce9ce97 100644
--- a/Formula/dart-beta.rb
+++ b/Formula/dart-beta.rb
@@ -4,30 +4,30 @@
 class DartBeta < Formula
   desc "Beta SDK"
   homepage "https://dart.dev"
-  version "2.17.0-266.8.beta"
+  version "2.17.0-266.10.beta"
 
   conflicts_with "dart", because: "dart ships the same binaries"
   if OS.mac? && Hardware::CPU.intel?
-    url "https://storage.googleapis.com/dart-archive/channels/beta/release/2.17.0-266.8.beta/sdk/dartsdk-macos-x64-release.zip"
-    sha256 "36f2ecdeed6f513840863ab7914928abca765d72393c64f0a8a7dc0d4f4a316a"
+    url "https://storage.googleapis.com/dart-archive/channels/beta/release/2.17.0-266.10.beta/sdk/dartsdk-macos-x64-release.zip"
+    sha256 "12ccb57aa60d4d66e3af8f59d4d34bffe4fec83eb3cc1e5a1fe83e9dcfea93d3"
   elsif OS.mac? && Hardware::CPU.arm?
-    url "https://storage.googleapis.com/dart-archive/channels/beta/release/2.17.0-266.8.beta/sdk/dartsdk-macos-arm64-release.zip"
-    sha256 "8a2c2ea134c90e4a2fa6636ddd1080b265e35a49c71a64f5ba5468222b6b2257"
+    url "https://storage.googleapis.com/dart-archive/channels/beta/release/2.17.0-266.10.beta/sdk/dartsdk-macos-arm64-release.zip"
+    sha256 "ed228a4f5430de546d3e8acec32fac981404c904fe519eaec6e1080701a5e276"
   elsif OS.linux? && Hardware::CPU.intel?
     if Hardware::CPU.is_64_bit?
-      url "https://storage.googleapis.com/dart-archive/channels/beta/release/2.17.0-266.8.beta/sdk/dartsdk-linux-x64-release.zip"
-      sha256 "1cc4f69696674baace0a7f1b99668633f9fca51cfa1fbe716cc97f8289e59508"
+      url "https://storage.googleapis.com/dart-archive/channels/beta/release/2.17.0-266.10.beta/sdk/dartsdk-linux-x64-release.zip"
+      sha256 "b57e68c74c1d72cdb78ac0203b4ded6e8e96c7311d1ca969322d4f7096a04b7c"
     else
-      url "https://storage.googleapis.com/dart-archive/channels/beta/release/2.17.0-266.8.beta/sdk/dartsdk-linux-ia32-release.zip"
-      sha256 "92c529233b602c1ecb28fecfe5905fa3a6b04bf00ad7c1c932fa801ba77a7cbf"
+      url "https://storage.googleapis.com/dart-archive/channels/beta/release/2.17.0-266.10.beta/sdk/dartsdk-linux-ia32-release.zip"
+      sha256 "8e0adab543062236bf6dab609889d930432bb10795f7f633cbfcb88402773aa7"
     end
   elsif OS.linux? && Hardware::CPU.arm?
     if Hardware::CPU.is_64_bit?
-      url "https://storage.googleapis.com/dart-archive/channels/beta/release/2.17.0-266.8.beta/sdk/dartsdk-linux-arm64-release.zip"
-      sha256 "18f98494af1e6d41fb0481ee010aee54b3ebfd72cad313ec2e067c1bb37e1968"
+      url "https://storage.googleapis.com/dart-archive/channels/beta/release/2.17.0-266.10.beta/sdk/dartsdk-linux-arm64-release.zip"
+      sha256 "c233288fc80e9b013fea21c9d6b2bba08ab25a59fb7146574a690200f1a4c474"
     else
-      url "https://storage.googleapis.com/dart-archive/channels/beta/release/2.17.0-266.8.beta/sdk/dartsdk-linux-arm-release.zip"
-      sha256 "e86ecd5f14c4a0de28569d3367e68600f1400c4a9a22792bc926a4368bebdb6a"
+      url "https://storage.googleapis.com/dart-archive/channels/beta/release/2.17.0-266.10.beta/sdk/dartsdk-linux-arm-release.zip"
+      sha256 "f18b68390f5dbf15cef7683e339578926c35fc3f20be9ef9ecf53abfd3c76c48"
     end
   end