diff --git a/CHANGELOG.md b/CHANGELOG.md
index 590d557..475f760 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 ### Added
+* Add glossary support for document translation.
 ### Changed
 ### Deprecated
 ### Removed
diff --git a/deepl/translator.py b/deepl/translator.py
index 38bf0d1..04ba0fe 100644
--- a/deepl/translator.py
+++ b/deepl/translator.py
@@ -739,6 +739,7 @@ def translate_document_from_filepath(
         source_lang: Optional[str] = None,
         target_lang: str,
         formality: Union[str, Formality] = Formality.DEFAULT,
+        glossary: Union[str, GlossaryInfo, None] = None,
     ) -> None:
         """Upload document at given input path, translate it into the target
         language, and download result to given output path.
@@ -751,6 +752,8 @@ def translate_document_from_filepath(
             "EN-US", "FR".
         :param formality: (Optional) Desired formality for translation, as Formality
             enum, "less" or "more".
+        :param glossary: (Optional) glossary or glossary ID to use for
+            translation. Must match specified source_lang and target_lang.
 
         :raises DocumentTranslationException: If an error occurs during translation,
             The exception includes information about the document request.
@@ -764,6 +767,7 @@ def translate_document_from_filepath(
                         target_lang=target_lang,
                         source_lang=source_lang,
                         formality=formality,
+                        glossary=glossary,
                     )
                 except Exception as e:
                     out_file.close()
@@ -778,6 +782,7 @@ def translate_document(
         source_lang: Optional[str] = None,
         target_lang: str,
         formality: Union[str, Formality] = Formality.DEFAULT,
+        glossary: Union[str, GlossaryInfo, None] = None,
     ) -> None:
         """Upload document, translate it into the target language, and download
         result.
@@ -792,6 +797,8 @@ def translate_document(
             example "DE", "EN-US", "FR".
         :param formality: (Optional) Desired formality for translation, as
             Formality enum, "less" or "more".
+        :param glossary: (Optional) glossary or glossary ID to use for
+            translation. Must match specified source_lang and target_lang.
 
         :raises DocumentTranslationException: If an error occurs during
             translation, the exception includes the document handle.
@@ -802,6 +809,7 @@ def translate_document(
             target_lang=target_lang,
             source_lang=source_lang,
             formality=formality,
+            glossary=glossary,
         )
 
         try:
@@ -828,6 +836,7 @@ def translate_document_upload(
         source_lang: Optional[str] = None,
         target_lang: str,
         formality: Union[str, Formality] = Formality.DEFAULT,
+        glossary: Union[str, GlossaryInfo, None] = None,
     ) -> DocumentHandle:
         """Upload document to be translated and return handle associated with
         request.
@@ -841,11 +850,13 @@ def translate_document_upload(
             example "DE", "EN-US", "FR".
         :param formality: (Optional) Desired formality for translation, as
             Formality enum, "less" or "more".
+        :param glossary: (Optional) glossary or glossary ID to use for
+            translation. Must match specified source_lang and target_lang.
         :return: DocumentHandle with ID and key identifying document.
         """
 
         request_data = self._check_language_and_formality(
-            source_lang, target_lang, formality
+            source_lang, target_lang, formality, glossary
         )
 
         files = {"file": input_document}
diff --git a/tests/conftest.py b/tests/conftest.py
index d6012ba..0dbadf8 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -4,6 +4,7 @@
 
 import deepl
 import os
+import pathlib
 from pydantic import BaseSettings
 import pytest
 from typing import Optional
@@ -164,6 +165,42 @@ def glossary_name(translator, request) -> str:
     return f"{glossary_name_prefix}{test_name}"
 
 
+@pytest.fixture
+def example_document_path(tmpdir):
+    tmpdir = pathlib.Path(tmpdir)
+    path = tmpdir / "input" / "example_document.txt"
+    path.parent.mkdir()
+    path.write_text(example_text["EN"])
+    return path
+
+
+@pytest.fixture
+def example_document_translation():
+    return example_text["DE"]
+
+
+@pytest.fixture
+def example_large_document_path(tmpdir):
+    tmpdir = pathlib.Path(tmpdir)
+    path = tmpdir / "input" / "example_document.txt"
+    path.parent.mkdir()
+    path.write_text((example_text["EN"] + "\n") * 1000)
+    return path
+
+
+@pytest.fixture
+def example_large_document_translation():
+    return (example_text["DE"] + "\n") * 1000
+
+
+@pytest.fixture
+def output_document_path(tmpdir):
+    tmpdir = pathlib.Path(tmpdir)
+    path = tmpdir / "output" / "example_document.txt"
+    path.parent.mkdir()
+    return path
+
+
 def create_glossary(
     translator,
     glossary_name,
diff --git a/tests/test_glossary.py b/tests/test_glossary.py
index 50053f3..3b49386 100644
--- a/tests/test_glossary.py
+++ b/tests/test_glossary.py
@@ -181,6 +181,33 @@ def test_glossary_translate_text_basic(translator, glossary_name):
     assert [r.text for r in result] == texts_en
 
 
+def test_glossary_translate_document(
+    translator,
+    glossary_name,
+    example_document_path,
+    output_document_path,
+):
+    input_text = "artist\nprize"
+    expected_output_text = "Maler\nGewinn"
+
+    glossary = create_glossary(
+        translator,
+        glossary_name,
+        entries={"artist": "Maler", "prize": "Gewinn"},
+        source_lang="EN",
+        target_lang="DE",
+    )
+    example_document_path.write_text(input_text)
+    translator.translate_document_from_filepath(
+        example_document_path,
+        output_path=output_document_path,
+        source_lang="EN",
+        target_lang="DE",
+        glossary=glossary,
+    )
+    assert expected_output_text == output_document_path.read_text()
+
+
 def test_glossary_translate_text_invalid(translator, glossary_name):
     glossary_ende = create_glossary(
         translator, f"{glossary_name}_ende", source_lang="EN", target_lang="DE"
diff --git a/tests/test_translate_document.py b/tests/test_translate_document.py
index ec86c56..733eecf 100644
--- a/tests/test_translate_document.py
+++ b/tests/test_translate_document.py
@@ -11,42 +11,6 @@
 default_lang_args = {"target_lang": "DE", "source_lang": "EN"}
 
 
-@pytest.fixture
-def example_document_path(tmpdir):
-    tmpdir = pathlib.Path(tmpdir)
-    path = tmpdir / "input" / "example_document.txt"
-    path.parent.mkdir()
-    path.write_text(example_text["EN"])
-    return path
-
-
-@pytest.fixture
-def example_document_translation():
-    return example_text["DE"]
-
-
-@pytest.fixture
-def example_large_document_path(tmpdir):
-    tmpdir = pathlib.Path(tmpdir)
-    path = tmpdir / "input" / "example_document.txt"
-    path.parent.mkdir()
-    path.write_text((example_text["EN"] + "\n") * 1000)
-    return path
-
-
-@pytest.fixture
-def example_large_document_translation():
-    return (example_text["DE"] + "\n") * 1000
-
-
-@pytest.fixture
-def output_document_path(tmpdir):
-    tmpdir = pathlib.Path(tmpdir)
-    path = tmpdir / "output" / "example_document.txt"
-    path.parent.mkdir()
-    return path
-
-
 def test_translate_document_from_filepath(
     translator,
     example_document_path,