diff --git a/examples/add_modify_printer.py b/examples/add_modify_printer.py
new file mode 100644
index 00000000..709404e6
--- /dev/null
+++ b/examples/add_modify_printer.py
@@ -0,0 +1,35 @@
+# pylint: disable=W0621
+"""Asynchronous Python client for IPP."""
+import asyncio
+from pathlib import Path
+
+from pyipp import IPP
+from pyipp.enums import IppOperation
+
+
+async def main() -> None:
+    """Show an example of add or modifying printer on your IP print server."""
+    content = Path("/path/to/driver.ppd").read_bytes()
+
+    async with IPP(
+        host="ipp://127.0.0.1:631/printers/My_New_Printer",
+        username="",
+        password="",
+    ) as ipp:
+        response = await ipp.execute(
+            IppOperation.CUPS_ADD_MODIFY_PRINTER,
+            {
+                "printer-attributes-tag": {
+                    "device-uri": "socket://192.168.0.12:9100",
+                    "printer-info": "My awesome printer",
+                    "printer-location": "office",
+                },
+                "file": content,
+            },
+        )
+
+        print(response)
+
+
+if __name__ == "__main__":
+    asyncio.run(main())
diff --git a/examples/print_example.py b/examples/print_job.py
similarity index 75%
rename from examples/print_example.py
rename to examples/print_job.py
index 2f005559..12541254 100644
--- a/examples/print_example.py
+++ b/examples/print_job.py
@@ -1,18 +1,17 @@
 # pylint: disable=W0621
 """Asynchronous Python client for IPP."""
 import asyncio
+from pathlib import Path
 
 from pyipp import IPP
 from pyipp.enums import IppOperation
 
 
 async def main() -> None:
+    """Show an example of printing on your IP print server."""
+    content = Path("/path/to/pdf.pdf").read_bytes()
 
-    pdf_file = '/path/to/pdf.pfd'
-    with open(pdf_file, 'rb') as f:
-        content = f.read()
-
-    """Show example of executing operation against your IPP print server."""
+    # then the printer must be shared if CUPS is used
     async with IPP("ipp://192.168.1.92:631/ipp/print") as ipp:
         response = await ipp.execute(
             IppOperation.PRINT_JOB,
@@ -22,7 +21,7 @@ async def main() -> None:
                     "job-name": "My Test Job",
                     "document-format": "application/pdf",
                 },
-                'data': content,
+                "file": content,
             },
         )
 
diff --git a/src/pyipp/serializer.py b/src/pyipp/serializer.py
index 3a9df1b6..a180cd19 100644
--- a/src/pyipp/serializer.py
+++ b/src/pyipp/serializer.py
@@ -93,7 +93,7 @@ def encode_dict(data: dict[str, Any]) -> bytes:
 
     encoded += struct.pack(">b", IppTag.END.value)
 
-    if "data" in data:
-        encoded += data["data"]
+    if isinstance(data.get("file"), bytes):
+        encoded += data["file"]
 
     return encoded
diff --git a/tests/fixtures/serializer/add-printer-with-driver-file-request-000.bin b/tests/fixtures/serializer/add-printer-with-driver-file-request-000.bin
new file mode 100644
index 00000000..3be68133
Binary files /dev/null and b/tests/fixtures/serializer/add-printer-with-driver-file-request-000.bin differ
diff --git a/tests/test_serializer.py b/tests/test_serializer.py
index 410f8de8..5724fc1a 100644
--- a/tests/test_serializer.py
+++ b/tests/test_serializer.py
@@ -74,3 +74,28 @@ def test_encode_dict() -> None:
     assert result == load_fixture_binary(
         "serializer/get-printer-attributes-request-000.bin",
     )
+
+
+def test_encode_dict_with_file() -> None:
+    """Test the encode_dict method with upload file."""
+    result = serializer.encode_dict(
+        {
+            "version": DEFAULT_PROTO_VERSION,
+            "operation": IppOperation.CUPS_ADD_MODIFY_PRINTER,
+            "request-id": 1,
+            "operation-attributes-tag": {
+                "attributes-charset": DEFAULT_CHARSET,
+                "attributes-natural-language": DEFAULT_CHARSET_LANGUAGE,
+                "printer-uri": "ipp://printer.example.com:632/printers/My_New_Printer",
+                "requesting-user-name": "PythonIPP",
+            },
+            "printer-attributes-tag": {
+                "device-uri": "socket://0.0.0.0:9100",
+            },
+            "file": b"*PPD-Adobe:...",
+        },
+    )
+
+    assert result == load_fixture_binary(
+        "serializer/add-printer-with-driver-file-request-000.bin",
+    )