diff --git a/crates/polars-mem-engine/src/executors/scan/ndjson.rs b/crates/polars-mem-engine/src/executors/scan/ndjson.rs
index 58862bd71f9e..1f90e07a72c1 100644
--- a/crates/polars-mem-engine/src/executors/scan/ndjson.rs
+++ b/crates/polars-mem-engine/src/executors/scan/ndjson.rs
@@ -1,5 +1,6 @@
 use polars_core::config;
 use polars_core::utils::accumulate_dataframes_vertical;
+use polars_io::prelude::{JsonLineReader, SerReader};
 use polars_io::utils::compression::maybe_decompress_bytes;
 
 use super::*;