diff --git a/geoclustering/encoding.py b/geoclustering/encoding.py
index 352bc12..f1fad74 100644
--- a/geoclustering/encoding.py
+++ b/geoclustering/encoding.py
@@ -89,6 +89,7 @@ class CSVEncoder:
                 self.state,
                 fieldnames=["cluster_id"] + list(cluster[0].keys()),
                 quoting=csv.QUOTE_NONNUMERIC,
+                lineterminator="\n",
             )
             self.writer.writeheader()
 
diff --git a/tests/encoding.py b/tests/encoding.py
index 2be0638..8609128 100644
--- a/tests/encoding.py
+++ b/tests/encoding.py
@@ -27,3 +27,4 @@ def test_encoders():
     assert res["string"] == read_fixture_content("snapshots/result.txt")
     assert res["json"] == read_fixture_content("snapshots/result.json")
     assert res["geojson"] == read_fixture_content("snapshots/result.geojson")
+    assert res["csv"] == read_fixture_content("snapshots/result.csv")
diff --git a/tests/fixtures/snapshots/result.csv b/tests/fixtures/snapshots/result.csv
new file mode 100644
index 0000000..0b5fa1e
--- /dev/null
+++ b/tests/fixtures/snapshots/result.csv
@@ -0,0 +1,5 @@
+"cluster_id","id","name","lat","lon"
+0,1,"Alice",52.523955,13.442362
+0,2,"Bob",52.526659,13.448097
+1,3,"Carol",52.525626,13.419246
+1,4,"Dan",52.52443559865125,13.41261723049818