diff --git a/lsp/codebook.lua b/lsp/codebook.lua
index dea265c59f..ec8931f719 100644
--- a/lsp/codebook.lua
+++ b/lsp/codebook.lua
@@ -28,10 +28,12 @@ return {
     'python',
     'ruby',
     'rust',
+    'swift',
     'toml',
     'text',
     'typescript',
     'typescriptreact',
+    'zig',
   },
   root_markers = { '.git', 'codebook.toml', '.codebook.toml' },
 }