diff --git a/crates/codebook-lsp/src/lsp.rs b/crates/codebook-lsp/src/lsp.rs
index 13c2ebe..5f6a8eb 100644
--- a/crates/codebook-lsp/src/lsp.rs
+++ b/crates/codebook-lsp/src/lsp.rs
@@ -82,6 +82,7 @@ impl LanguageServer for Backend {
                 position_encoding: Some(PositionEncodingKind::UTF16),
                 text_document_sync: Some(TextDocumentSyncCapability::Options(
                     TextDocumentSyncOptions {
+                        open_close: Some(true),
                         change: Some(TextDocumentSyncKind::FULL),
                         save: Some(TextDocumentSyncSaveOptions::SaveOptions(SaveOptions {
                             include_text: Some(true),