diff --git a/bucket/docfx.json b/bucket/docfx.json
index dfed887305..0891ed1db3 100644
--- a/bucket/docfx.json
+++ b/bucket/docfx.json
@@ -1,10 +1,10 @@
 {
-    "version": "2.78.3",
+    "version": "2.78.4",
     "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/v2.78.3/docfx-win-x64-v2.78.3.zip",
-    "hash": "e9277ee47af98d405000ff4f8753a73edd55c0cf07a372a61d3ebe5a9739d12a",
+    "url": "https://github.com/dotnet/docfx/releases/download/v2.78.4/docfx-win-x64-v2.78.4.zip",
+    "hash": "b5f1f122f6bac56715b50e15b880d271661a5e1a8175db470f7cff841eef8651",
     "bin": "docfx.exe",
     "checkver": {
         "github": "https://github.com/dotnet/docfx"