diff --git a/.luacheckrc b/.luacheckrc
index 6d21f31..3dcbf46 100644
--- a/.luacheckrc
+++ b/.luacheckrc
@@ -51,7 +51,8 @@ read_globals = {
         fields = {
             "hypot",
             "sign",
-            "factorial"
+            "factorial",
+            "round",
         }
     },
 
diff --git a/types/math.type.lua b/types/math.type.lua
new file mode 100644
index 0000000..4d62d97
--- /dev/null
+++ b/types/math.type.lua
@@ -0,0 +1,7 @@
+---https://github.com/sumneko/lua-language-server/wiki
+
+---@alias mathlib mathlib|MathAbstract
+
+---Math helpers
+---@class MathAbstract
+---@field round fun(x: number): number Returns `x` rounded to the nearest integer. At a multiple of 0.5, rounds away from zero.