diff --git a/core/wren-core/core/src/mdl/cube.rs b/core/wren-core/core/src/mdl/cube.rs
index 2787d199d5..24dbec2637 100644
--- a/core/wren-core/core/src/mdl/cube.rs
+++ b/core/wren-core/core/src/mdl/cube.rs
@@ -13,7 +13,11 @@ use serde::{Deserialize, Serialize};
 use crate::mdl::manifest::{Cube, CubeDimension, Manifest, Measure, TimeDimension};
 
 /// A structured cube query — the input to [`cube_query_to_sql`].
-#[derive(Debug, Clone, Serialize, Deserialize)]
+///
+/// Every field satisfies [`Default`], so callers should use struct-update
+/// syntax (`..Default::default()`) and only name the fields they care about.
+/// New optional fields can then be added without breaking downstream code.
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct CubeQuery {
     pub cube: String,
@@ -647,13 +651,7 @@ mod tests {
     fn query(cube: &str) -> CubeQuery {
         CubeQuery {
             cube: cube.to_string(),
-            measures: vec![],
-            dimensions: vec![],
-            time_dimensions: vec![],
-            filters: vec![],
-            order_by: vec![],
-            limit: None,
-            offset: None,
+            ..Default::default()
         }
     }
 
diff --git a/core/wren-core/core/tests/cube_public_api.rs b/core/wren-core/core/tests/cube_public_api.rs
index 2e5adc0388..ba60e83b67 100644
--- a/core/wren-core/core/tests/cube_public_api.rs
+++ b/core/wren-core/core/tests/cube_public_api.rs
@@ -27,14 +27,11 @@ fn cube_query_public_order_by_types_generate_sql_without_a_limit() {
         cube: "OrdersCube".to_string(),
         measures: vec!["revenue".to_string()],
         dimensions: vec!["status".to_string()],
-        time_dimensions: vec![],
-        filters: vec![],
         order_by: vec![CubeOrderBy {
             member: "revenue".to_string(),
             direction: SortDirection::Desc,
         }],
-        limit: None,
-        offset: None,
+        ..Default::default()
     };
 
     assert_eq!(