diff --git a/data/plenary/filetypes/builtin.lua b/data/plenary/filetypes/builtin.lua
index 6f341d60..43d9f9ca 100644
--- a/data/plenary/filetypes/builtin.lua
+++ b/data/plenary/filetypes/builtin.lua
@@ -59,6 +59,8 @@ return {
     ['smithy'] = [[smithy]],
     ['sol'] = 'solidity',
     ['dtsi'] = 'dts',
+    ['zig'] = 'zig',
+    ['zon'] = 'zig',
   },
   file_name = {
     ['cakefile'] = 'coffee',