diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index d0e4dd5022..17f3bbb5dc 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -12106,7 +12106,7 @@ winlayout([{tabnr}])                                               *winlayout()*
                   • {tabnr} (`integer?`)
 
                 Return: ~
-                  (`any[]`)
+                  (`vim.fn.winlayout.ret`)
 
 winline()                                                            *winline()*
 		The result is a Number, which is the screen line of the cursor
diff --git a/runtime/lua/vim/_meta/builtin_types.lua b/runtime/lua/vim/_meta/builtin_types.lua
index 763153f38d..6886cd6bb7 100644
--- a/runtime/lua/vim/_meta/builtin_types.lua
+++ b/runtime/lua/vim/_meta/builtin_types.lua
@@ -297,3 +297,18 @@
 --- A list of dictionaries with information about
 --- undo blocks.
 --- @field entries vim.fn.undotree.entry[]
+
+--- @class vim.fn.winlayout.leaf
+--- @field [1] "leaf" Node type
+--- @field [2] integer winid
+
+--- @class vim.fn.winlayout.branch
+--- @field [1] "row" | "col" Node type
+--- @field [2] (vim.fn.winlayout.leaf|vim.fn.winlayout.branch)[] children
+
+--- @class vim.fn.winlayout.empty
+
+--- @alias vim.fn.winlayout.ret
+--- | vim.fn.winlayout.leaf
+--- | vim.fn.winlayout.branch
+--- | vim.fn.winlayout.empty
diff --git a/runtime/lua/vim/_meta/vimfn.lua b/runtime/lua/vim/_meta/vimfn.lua
index 30bd45c889..6a84f3a270 100644
--- a/runtime/lua/vim/_meta/vimfn.lua
+++ b/runtime/lua/vim/_meta/vimfn.lua
@@ -11002,7 +11002,7 @@ function vim.fn.winheight(nr) end
 --- <
 ---
 --- @param tabnr? integer
---- @return any[]
+--- @return vim.fn.winlayout.ret
 function vim.fn.winlayout(tabnr) end
 
 --- The result is a Number, which is the screen line of the cursor
diff --git a/src/nvim/eval.lua b/src/nvim/eval.lua
index 40a1853b44..ce55d511c5 100644
--- a/src/nvim/eval.lua
+++ b/src/nvim/eval.lua
@@ -13321,7 +13321,7 @@ M.funcs = {
     ]=],
     name = 'winlayout',
     params = { { 'tabnr', 'integer' } },
-    returns = 'any[]',
+    returns = 'vim.fn.winlayout.ret',
     signature = 'winlayout([{tabnr}])',
   },
   winline = {