diff --git a/bucket/slang.json b/bucket/slang.json
index c0272ae1a2..6110c95ada 100644
--- a/bucket/slang.json
+++ b/bucket/slang.json
@@ -1,16 +1,16 @@
 {
-    "version": "2025.20",
+    "version": "2025.21",
     "description": "A new language and compiler for shader development.",
     "homepage": "https://shader-slang.com/",
     "license": "MIT",
     "architecture": {
         "64bit": {
-            "url": "https://github.com/shader-slang/slang/releases/download/v2025.20/slang-2025.20-windows-x86_64.zip",
-            "hash": "1d25fa7686a0287ff2dfb0313556b1aba28eab2f39e9281bdfc8af71b70a3a51"
+            "url": "https://github.com/shader-slang/slang/releases/download/v2025.21/slang-2025.21-windows-x86_64.zip",
+            "hash": "21bf1940f8d298c1d6c804b23afae074063b2dc2e59a5aa3ac0b4f4ab6dc9a0d"
         },
         "arm64": {
-            "url": "https://github.com/shader-slang/slang/releases/download/v2025.20/slang-2025.20-windows-aarch64.zip",
-            "hash": "43a92dafd99191e05cbd1ef4baf07b18a8bb5d9252fd1552a8e0bdf5b5749122"
+            "url": "https://github.com/shader-slang/slang/releases/download/v2025.21/slang-2025.21-windows-aarch64.zip",
+            "hash": "e15c55cc7d5d4fc3cb20b59fe53ba4c3247f664f0aeaf34d23f3c5285833b389"
         }
     },
     "bin": [