diff --git a/bucket/docfx.json b/bucket/docfx.json
index f21e11c461..dfed887305 100644
--- a/bucket/docfx.json
+++ b/bucket/docfx.json
@@ -1,10 +1,10 @@
 {
-    "version": "2.78.0",
+    "version": "2.78.3",
     "description": "A documentation generation tool for API reference and Markdown files",
     "homepage": "https://dotnet.github.io/docfx/",
     "license": "MIT",
-    "url": "https://github.com/dotnet/docfx/releases/download/v2.78.0/docfx-win-x64-v2.78.0.zip",
-    "hash": "cd91a1fc4ff9f23cd78bb6f40a5ffe274e1ecde14043e938000011004413c908",
+    "url": "https://github.com/dotnet/docfx/releases/download/v2.78.3/docfx-win-x64-v2.78.3.zip",
+    "hash": "e9277ee47af98d405000ff4f8753a73edd55c0cf07a372a61d3ebe5a9739d12a",
     "bin": "docfx.exe",
     "checkver": {
         "github": "https://github.com/dotnet/docfx"