diff --git a/bucket/dart.json b/bucket/dart.json
index a624fa9b85..98368aad2d 100644
--- a/bucket/dart.json
+++ b/bucket/dart.json
@@ -1,5 +1,5 @@
 {
-    "version": "2.12.0",
+    "version": "2.12.1",
     "description": "SDK for the Dart programming language",
     "homepage": "https://www.dartlang.org/",
     "license": "BSD-3-Clause",
@@ -7,12 +7,12 @@
     "env_add_path": "bin",
     "architecture": {
         "64bit": {
-            "url": "https://storage.googleapis.com/dart-archive/channels/stable/release/2.12.0/sdk/dartsdk-windows-x64-release.zip",
-            "hash": "177ef2e1590ba109037c3c230a9e3947de53d2e48d8b7884be92e681db85d11a"
+            "url": "https://storage.googleapis.com/dart-archive/channels/stable/release/2.12.1/sdk/dartsdk-windows-x64-release.zip",
+            "hash": "8f705a3039bfb53bfa0a69d1aa92d14814d5e2ddeb7cef669cff76e9d1a56617"
         },
         "32bit": {
-            "url": "https://storage.googleapis.com/dart-archive/channels/stable/release/2.12.0/sdk/dartsdk-windows-ia32-release.zip",
-            "hash": "0e0c78a38563e6fb56256012cb6c48bd42892bc23c7cb80204dc520185baa106"
+            "url": "https://storage.googleapis.com/dart-archive/channels/stable/release/2.12.1/sdk/dartsdk-windows-ia32-release.zip",
+            "hash": "09092d5400e1a3006bb410a81d29085be0af3074521036923cfba848e4c97846"
         }
     },
     "checkver": {