diff --git a/vegafusion-common/src/data/scalar.rs b/vegafusion-common/src/data/scalar.rs
index 03daa018..3a13621c 100644
--- a/vegafusion-common/src/data/scalar.rs
+++ b/vegafusion-common/src/data/scalar.rs
@@ -4,7 +4,6 @@ use datafusion_common::DataFusionError;
 
 use datafusion_common::utils::array_into_list_array;
 pub use datafusion_common::ScalarValue;
-use datafusion_expr::col;
 
 #[cfg(feature = "json")]
 use {
diff --git a/vegafusion-dataframe/src/dataframe.rs b/vegafusion-dataframe/src/dataframe.rs
index 6d051966..94bf86f8 100644
--- a/vegafusion-dataframe/src/dataframe.rs
+++ b/vegafusion-dataframe/src/dataframe.rs
@@ -4,10 +4,7 @@ use arrow::datatypes::{Schema, SchemaRef};
 use arrow::record_batch::RecordBatch;
 use async_trait::async_trait;
 use datafusion_common::{DFSchema, ScalarValue};
-use datafusion_expr::{
-    expr, BuiltInWindowFunction, Expr, WindowFrame, WindowFrameBound, WindowFrameUnits,
-    WindowFunctionDefinition,
-};
+use datafusion_expr::{expr, BuiltInWindowFunction, Expr, WindowFrame, WindowFunctionDefinition};
 use std::any::Any;
 use std::fmt::{Display, Formatter};
 use std::sync::Arc;
diff --git a/vegafusion-runtime/src/transform/collect.rs b/vegafusion-runtime/src/transform/collect.rs
index ed43f06e..8e067a09 100644
--- a/vegafusion-runtime/src/transform/collect.rs
+++ b/vegafusion-runtime/src/transform/collect.rs
@@ -8,8 +8,7 @@ use vegafusion_core::error::{Result, ResultWithContext};
 use vegafusion_core::proto::gen::transforms::{Collect, SortOrder};
 
 use async_trait::async_trait;
-use datafusion_common::scalar::ScalarValue;
-use datafusion_expr::{BuiltInWindowFunction, WindowFrame, WindowFrameBound, WindowFrameUnits};
+use datafusion_expr::{BuiltInWindowFunction, WindowFrame};
 use vegafusion_common::column::{flat_col, unescaped_col};
 use vegafusion_common::data::ORDER_COL;
 use vegafusion_core::task_graph::task_value::TaskValue;
diff --git a/vegafusion-runtime/src/transform/identifier.rs b/vegafusion-runtime/src/transform/identifier.rs
index 30b356a5..1398f1e7 100644
--- a/vegafusion-runtime/src/transform/identifier.rs
+++ b/vegafusion-runtime/src/transform/identifier.rs
@@ -2,13 +2,9 @@ use crate::expression::compiler::config::CompilationConfig;
 use crate::transform::TransformTrait;
 
 use async_trait::async_trait;
-use datafusion_expr::{
-    expr, BuiltInWindowFunction, Expr, WindowFrame, WindowFrameBound, WindowFrameUnits,
-    WindowFunctionDefinition,
-};
+use datafusion_expr::{expr, BuiltInWindowFunction, Expr, WindowFrame, WindowFunctionDefinition};
 use std::sync::Arc;
 use vegafusion_common::column::flat_col;
-use vegafusion_common::data::scalar::ScalarValue;
 use vegafusion_common::data::ORDER_COL;
 use vegafusion_common::error::Result;
 use vegafusion_core::proto::gen::transforms::Identifier;
diff --git a/vegafusion-runtime/src/transform/window.rs b/vegafusion-runtime/src/transform/window.rs
index f44bff5b..05fc57a0 100644
--- a/vegafusion-runtime/src/transform/window.rs
+++ b/vegafusion-runtime/src/transform/window.rs
@@ -11,7 +11,7 @@ use vegafusion_core::proto::gen::transforms::{
 };
 use vegafusion_core::task_graph::task_value::TaskValue;
 
-use datafusion_expr::{window_frame, BuiltInWindowFunction, WindowFrameBound, WindowFrameUnits};
+use datafusion_expr::{BuiltInWindowFunction, WindowFrameBound, WindowFrameUnits};
 use vegafusion_common::column::{flat_col, unescaped_col};
 use vegafusion_common::data::ORDER_COL;
 use vegafusion_common::datatypes::to_numeric;
diff --git a/vegafusion-sql/src/dataframe/mod.rs b/vegafusion-sql/src/dataframe/mod.rs
index e52cf69c..ea0d6083 100644
--- a/vegafusion-sql/src/dataframe/mod.rs
+++ b/vegafusion-sql/src/dataframe/mod.rs
@@ -11,7 +11,7 @@ use datafusion_expr::expr::AggregateFunctionDefinition;
 use datafusion_expr::{
     abs, expr, is_null, lit, max, min, when, AggregateFunction, BuiltInWindowFunction,
     BuiltinScalarFunction, Expr, ExprSchemable, ScalarFunctionDefinition, WindowFrame,
-    WindowFrameBound, WindowFrameUnits, WindowFunctionDefinition,
+    WindowFunctionDefinition,
 };
 use sqlparser::ast::{
     Cte, Expr as SqlExpr, GroupByExpr, Ident, Query, Select, SelectItem, SetExpr, Statement,