diff --git a/src/spikeinterface/extractors/mdaextractors.py b/src/spikeinterface/extractors/mdaextractors.py
index fb1ee60a99..e55f6b4a53 100644
--- a/src/spikeinterface/extractors/mdaextractors.py
+++ b/src/spikeinterface/extractors/mdaextractors.py
@@ -442,18 +442,21 @@ def is_url(path):
 
 
 def _download_bytes_to_tmpfile(url, start, end):
-    try:
-        import requests
-    except:
-        raise Exception("Unable to import module: requests")
-    headers = {"Range": "bytes={}-{}".format(start, end - 1)}
-    r = requests.get(url, headers=headers, stream=True)
-    fd, tmp_fname = tempfile.mkstemp()
-    os.close(fd)
-    with open(tmp_fname, "wb") as f:
-        for chunk in r.iter_content(chunk_size=1024):
-            if chunk:
-                f.write(chunk)
+    import requests
+
+    headers = {"Range": f"bytes={start}-{end - 1}"}
+
+    with requests.get(url, headers=headers, stream=True) as r:
+        r.raise_for_status()  # Exposes HTTPError if one occurred
+
+        with tempfile.NamedTemporaryFile(delete=False, mode="wb") as f:
+            for chunk in r.iter_content(chunk_size=1024):
+                if chunk:
+                    f.write(chunk)
+
+            # Store the temp file name for return
+            tmp_fname = f.name
+
     return tmp_fname
 
 
diff --git a/src/spikeinterface/preprocessing/deepinterpolation/generators.py b/src/spikeinterface/preprocessing/deepinterpolation/generators.py
index d63080be41..f3587cb7ec 100644
--- a/src/spikeinterface/preprocessing/deepinterpolation/generators.py
+++ b/src/spikeinterface/preprocessing/deepinterpolation/generators.py
@@ -86,10 +86,11 @@ def __init__(
         sequential_generator_params["total_samples"] = self.total_samples
         sequential_generator_params["pre_post_omission"] = pre_post_omission
 
-        json_fd, json_path = tempfile.mkstemp(suffix=".json")
-        os.close(json_fd)
-        with open(json_path, "w") as f:
+        with tempfile.NamedTemporaryFile(suffix=".json", mode="w", delete=False, dir="/tmp") as f:
             json.dump(sequential_generator_params, f)
+            f.flush()
+            json_path = f.name
+
         super().__init__(json_path)
 
         self._update_end_frame(total_num_samples)
@@ -245,10 +246,11 @@ def __init__(
         sequential_generator_params["total_samples"] = self.total_samples
         sequential_generator_params["pre_post_omission"] = pre_post_omission
 
-        json_fd, json_path = tempfile.mkstemp(suffix=".json")
-        os.close(json_fd)
-        with open(json_path, "w") as f:
+        with tempfile.NamedTemporaryFile(suffix=".json", mode="w", delete=False, dir="/tmp") as f:
             json.dump(sequential_generator_params, f)
+            f.flush()
+            json_path = f.name
+
         super().__init__(json_path)
 
         self._update_end_frame(num_segment_samples)