diff --git a/docs/zig.mod.md b/docs/zig.mod.md
index bc155172f4980e0a71075b600a6313a55f0f4cff..ccf4a1edd1dbeecd2da8a7194b4fdc7cb40ab763 100644
--- a/docs/zig.mod.md
+++ b/docs/zig.mod.md
@@ -34,6 +34,10 @@ This is a list of relative paths to C source files to compile along with this pr
 - Type: `[]Dep`
 This is a list of `Dep` objects. `Dep` objects are how you include the other people's code in your project. See the `Dep` documentation below to learn more about the attributes available here.
 
+### `dev_dependencies`
+- Type: `[]Dep`
+Similar to `dependencies` but will only get added to the project if the current `zig.mod` is the root module.
+
 ----
 
 ### Dep Object