diff --git a/bucket/dart.json b/bucket/dart.json
index 81f5974b4b..930b34527e 100644
--- a/bucket/dart.json
+++ b/bucket/dart.json
@@ -1,5 +1,5 @@
 {
-    "version": "3.4.2",
+    "version": "3.4.3",
     "description": "SDK for the Dart programming language",
     "homepage": "https://dart.dev/",
     "license": "BSD-3-Clause",
@@ -7,12 +7,12 @@
     "env_add_path": "bin",
     "architecture": {
         "64bit": {
-            "url": "https://storage.googleapis.com/dart-archive/channels/stable/release/3.4.2/sdk/dartsdk-windows-x64-release.zip",
-            "hash": "d116e5b745fb251ca0292aa2164673c835a54765895b9e06f76a6ef74d011e81"
+            "url": "https://storage.googleapis.com/dart-archive/channels/stable/release/3.4.3/sdk/dartsdk-windows-x64-release.zip",
+            "hash": "b5cd1d61a44f09deb22aff53e2fa5600c3473c292c71ef8e1f8516f52e403766"
         },
         "32bit": {
-            "url": "https://storage.googleapis.com/dart-archive/channels/stable/release/3.4.2/sdk/dartsdk-windows-ia32-release.zip",
-            "hash": "a1a2582d4c214d1324bbb52a1b0aff74014d0f57b5aec9703a3783f5a39b7264"
+            "url": "https://storage.googleapis.com/dart-archive/channels/stable/release/3.4.3/sdk/dartsdk-windows-ia32-release.zip",
+            "hash": "17b4e352278ee0acabfd6b95b7979225f71da0c9beb0c655f7ba3d35add539b8"
         }
     },
     "checkver": {