diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index d661066e..d7efce71 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.18.1"
+  ".": "0.18.2"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index 52fcc589..cb44f6c6 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 40
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/sent%2Fsent-dm-2fa77c5563df4353049c27f275600e30487ea3fd617770a059a8e8579bedcedb.yml
-openapi_spec_hash: 3ae742e1990418d2c01ecac606187887
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/sent%2Fsent-dm-d0b10022e8bcb371d5db9a476396808e779984cee62c9f3d1b042d51a3fbce4a.yml
+openapi_spec_hash: 3451ed04f3a6373c7905abb219fc4e30
 config_hash: 405ade725d72d542c60de821a127411b
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 12f9086c..192ddb0f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.18.2 (2026-04-14)
+
+Full Changelog: [v0.18.1...v0.18.2](https://github.com/sentdm/sent-dm-python/compare/v0.18.1...v0.18.2)
+
+### Bug Fixes
+
+* ensure file data are only sent as 1 parameter ([c3cc931](https://github.com/sentdm/sent-dm-python/commit/c3cc93144f58651efa4a00c8f71a2e213846e3ee))
+
 ## 0.18.1 (2026-04-10)
 
 Full Changelog: [v0.18.0...v0.18.1](https://github.com/sentdm/sent-dm-python/compare/v0.18.0...v0.18.1)
diff --git a/pyproject.toml b/pyproject.toml
index cb4f184e..2049e493 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "sentdm"
-version = "0.18.1"
+version = "0.18.2"
 description = "The official Python library for the Sent API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/sent_dm/_utils/_utils.py b/src/sent_dm/_utils/_utils.py
index eec7f4a1..63b8cd60 100644
--- a/src/sent_dm/_utils/_utils.py
+++ b/src/sent_dm/_utils/_utils.py
@@ -86,8 +86,9 @@ def _extract_items(
     index += 1
     if is_dict(obj):
         try:
-            # We are at the last entry in the path so we must remove the field
-            if (len(path)) == index:
+            # Remove the field if there are no more dict keys in the path,
+            # only "<array>" traversal markers or end.
+            if all(p == "<array>" for p in path[index:]):
                 item = obj.pop(key)
             else:
                 item = obj[key]
diff --git a/src/sent_dm/_version.py b/src/sent_dm/_version.py
index 3ecc1e4b..bdd289d0 100644
--- a/src/sent_dm/_version.py
+++ b/src/sent_dm/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "sent_dm"
-__version__ = "0.18.1"  # x-release-please-version
+__version__ = "0.18.2"  # x-release-please-version
diff --git a/tests/test_extract_files.py b/tests/test_extract_files.py
index eb3def7f..76743d88 100644
--- a/tests/test_extract_files.py
+++ b/tests/test_extract_files.py
@@ -35,6 +35,15 @@ def test_multiple_files() -> None:
     assert query == {"documents": [{}, {}]}
 
 
+def test_top_level_file_array() -> None:
+    query = {"files": [b"file one", b"file two"], "title": "hello"}
+    assert extract_files(query, paths=[["files", "<array>"]]) == [
+        ("files[]", b"file one"),
+        ("files[]", b"file two"),
+    ]
+    assert query == {"title": "hello"}
+
+
 @pytest.mark.parametrize(
     "query,paths,expected",
     [