diff --git a/datafusion/sql/src/unparser/dialect.rs b/datafusion/sql/src/unparser/dialect.rs
index 87453f81ee3d8..1e82fc2b3c1ba 100644
--- a/datafusion/sql/src/unparser/dialect.rs
+++ b/datafusion/sql/src/unparser/dialect.rs
@@ -27,7 +27,7 @@ use sqlparser::{ast, keywords::ALL_KEYWORDS};
 ///
 /// See <https://github.com/sqlparser-rs/sqlparser-rs/pull/1170>
 /// See also the discussion in <https://github.com/apache/datafusion/pull/10625>
-pub trait Dialect {
+pub trait Dialect: Send + Sync {
     /// Return the character used to quote identifiers.
     fn identifier_quote_style(&self, _identifier: &str) -> Option<char>;