diff --git a/docfx.json b/docfx.json
new file mode 100644
index 0000000000..ba5f789d81
--- /dev/null
+++ b/docfx.json
@@ -0,0 +1,14 @@
+{
+    "homepage": "https://dotnet.github.io/docfx/",
+    "version": "2.40.4",
+    "license": "MIT",
+    "url": "https://github.com/dotnet/docfx/releases/download/v2.40.4/docfx.zip",
+    "hash": "2824a16d35ef0e3068dd6ef620acb346b0571a455e4f328a685c01198541288e",
+    "bin": "docfx.exe",
+    "checkver": {
+        "github": "https://github.com/dotnet/docfx"
+    },
+    "autoupdate": {
+        "url": "https://github.com/dotnet/docfx/releases/download/v$version/docfx.zip"
+    }
+}