diff --git a/bindings/pydeck/tests/fixtures.py b/bindings/pydeck/tests/fixtures.py
index f7f5bda15c4..d58e443116f 100644
--- a/bindings/pydeck/tests/fixtures.py
+++ b/bindings/pydeck/tests/fixtures.py
@@ -11,6 +11,7 @@
 fixtures = {}
 
 for fname in glob.glob(json_glob):
-    fixture_text = open(fname).read()
+    with open(fname) as file:
+        fixture_text = file.read()
     fixture_name = os.path.basename(fname).replace(".json", "")
     fixtures[fixture_name] = fixture_text