diff --git a/crates/polars-io/src/csv/read/utils.rs b/crates/polars-io/src/csv/read/utils.rs
index 651ecc8328ec..61a14399237a 100644
--- a/crates/polars-io/src/csv/read/utils.rs
+++ b/crates/polars-io/src/csv/read/utils.rs
@@ -129,6 +129,9 @@ fn decompress_impl<R: Read>(
                     },
                 };
             }
+            if line_count == n_rows {
+                out.truncate(buf_pos); // retain only first n_rows in out
+            }
             out
         },
     })
diff --git a/crates/polars/Cargo.toml b/crates/polars/Cargo.toml
index 54a47ad4546c..49204000d01d 100644
--- a/crates/polars/Cargo.toml
+++ b/crates/polars/Cargo.toml
@@ -213,7 +213,13 @@ string_pad = ["polars-lazy?/string_pad", "polars-ops/string_pad"]
 string_reverse = ["polars-lazy?/string_reverse", "polars-ops/string_reverse"]
 string_to_integer = ["polars-lazy?/string_to_integer", "polars-ops/string_to_integer"]
 take_opt_iter = ["polars-core/take_opt_iter"]
-timezones = ["polars-core/timezones", "polars-lazy?/timezones", "polars-io/timezones", "polars-sql?/timezones"]
+timezones = [
+  "polars-core/timezones",
+  "polars-lazy?/timezones",
+  "polars-io/timezones",
+  "polars-ops/timezones",
+  "polars-sql?/timezones",
+]
 to_dummies = ["polars-ops/to_dummies"]
 top_k = ["polars-lazy?/top_k"]
 trigonometry = ["polars-lazy?/trigonometry"]
diff --git a/crates/polars/tests/it/io/csv.rs b/crates/polars/tests/it/io/csv.rs
index 22d6d644a6fc..1b78969093e2 100644
--- a/crates/polars/tests/it/io/csv.rs
+++ b/crates/polars/tests/it/io/csv.rs
@@ -2,7 +2,6 @@ use std::io::Cursor;
 use std::num::NonZeroUsize;
 
 use polars::io::RowIndex;
-use polars_core::export::chrono;
 use polars_core::utils::concat_df;
 
 use super::*;
@@ -41,7 +40,10 @@ fn write_csv() {
 }
 
 #[test]
+#[cfg(feature = "timezones")]
 fn write_dates() {
+    use polars_core::export::chrono;
+
     let s0 = Series::new("date", [chrono::NaiveDate::from_yo_opt(2024, 33), None]);
     let s1 = Series::new("time", [None, chrono::NaiveTime::from_hms_opt(19, 50, 0)]);
     let s2 = Series::new(