diff --git a/CHANGELOG.md b/CHANGELOG.md
index c65703258..4bbd0ba36 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,7 @@
-## 0.5.4-dev1
+## 0.5.4-dev2
 
 ### Enhancements
 
-
 * Add `FsspecConnector` to easily integrate any existing `fsspec` filesystem as a connector.
 * Rename `s3_connector.py` to `s3.py` for readability and consistency with the
   rest of the connectors.
@@ -11,6 +10,7 @@
 * Adds an `UNSTRUCTURED_LANGUAGE_CHECKS` environment variable to control whether or not language
   specific checks like vocabulary and POS tagging are applied. Set to `"true"` for higher
   resolution partitioning and `"false"` for faster processing.
+* Improves `detect_filetype` warning to include filename when provided.
 
 ### Features
 
diff --git a/unstructured/__version__.py b/unstructured/__version__.py
index 7194bf5b9..15cc6c086 100644
--- a/unstructured/__version__.py
+++ b/unstructured/__version__.py
@@ -1 +1 @@
-__version__ = "0.5.4-dev1"  # pragma: no cover
+__version__ = "0.5.4-dev2"  # pragma: no cover
diff --git a/unstructured/file_utils/filetype.py b/unstructured/file_utils/filetype.py
index 5685f7e9d..f6ff8902f 100644
--- a/unstructured/file_utils/filetype.py
+++ b/unstructured/file_utils/filetype.py
@@ -229,7 +229,8 @@ def detect_filetype(
             return EXT_TO_FILETYPE.get(extension.lower(), filetype)
 
     logger.warning(
-        f"MIME type was {mime_type}. This file type is not currently supported in unstructured.",
+        f"The MIME type{f' of {filename!r}' if filename else ''} is {mime_type!r}. "
+        "This file type is not currently supported in unstructured.",
     )
     return FileType.UNK