diff --git a/doc/preview.txt b/doc/preview.txt
index be1d82b..d5ae5bd 100644
--- a/doc/preview.txt
+++ b/doc/preview.txt
@@ -293,6 +293,9 @@ preview.nvim fires User autocmds with structured data:
 `PreviewCompileFailed`   Compilation failed (non-zero exit).
                         data: `{ bufnr, provider, code, stderr }`
 
+`PreviewWatchingStopped` Watching stopped (toggle off or buffer delete).
+                        data: `{ bufnr, provider }`
+
 Example: >lua
     vim.api.nvim_create_autocmd('User', {
       pattern = 'PreviewCompileSuccess',
@@ -354,6 +357,12 @@ The following configs leverage the below basic setup: ~
         synctex_pdf[args.data.bufnr] = args.data.output
       end,
     })
+    vim.api.nvim_create_autocmd('User', {
+      pattern = 'PreviewWatchingStopped',
+      callback = function(args)
+        synctex_pdf[args.data.bufnr] = nil
+      end,
+    })
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