diff --git a/spoolman/database/filament.py b/spoolman/database/filament.py
index e4079624f..97898fd7a 100644
--- a/spoolman/database/filament.py
+++ b/spoolman/database/filament.py
@@ -168,6 +168,8 @@ async def update(
                 filament.vendor = await vendor.get_by_id(db, v)
         elif k == "extra":
             filament.extra = [models.FilamentField(key=k, value=v) for k, v in v.items()]
+        elif k == "multi_color_direction":
+            filament.multi_color_direction = v.value if v is not None else None
         else:
             setattr(filament, k, v)
     await db.commit()
diff --git a/tests_integration/tests/filament/test_update.py b/tests_integration/tests/filament/test_update.py
index 375b4a7e6..b20799fc6 100644
--- a/tests_integration/tests/filament/test_update.py
+++ b/tests_integration/tests/filament/test_update.py
@@ -95,6 +95,49 @@ def test_update_filament(random_vendor: dict[str, Any]):
     httpx.delete(f"{URL}/api/v1/filament/{filament['id']}").raise_for_status()
 
 
+def test_update_filament_multi_color():
+    """Test updating a filament in the database."""
+    # Setup
+    result = httpx.post(
+        f"{URL}/api/v1/filament",
+        json={
+            "density": 1.25,
+            "diameter": 1.75,
+            "multi_color_hexes": "FF0000,00FF00",
+            "multi_color_direction": "coaxial",
+        },
+    )
+    result.raise_for_status()
+    added_filament = result.json()
+
+    # Execute
+    new_multi_color_hexes = "00FF00,0000FF"
+    new_multi_color_direction = "longitudinal"
+    result = httpx.patch(
+        f"{URL}/api/v1/filament/{added_filament['id']}",
+        json={
+            "multi_color_hexes": new_multi_color_hexes,
+            "multi_color_direction": new_multi_color_direction,
+        },
+    )
+    result.raise_for_status()
+
+    # Verify
+    filament = result.json()
+    assert_dicts_compatible(
+        filament,
+        {
+            "id": added_filament["id"],
+            "registered": added_filament["registered"],
+            "multi_color_hexes": new_multi_color_hexes,
+            "multi_color_direction": new_multi_color_direction,
+        },
+    )
+
+    # Clean up
+    httpx.delete(f"{URL}/api/v1/filament/{filament['id']}").raise_for_status()
+
+
 def test_update_filament_cant_set_none(random_vendor: dict[str, Any]):
     """Test updating a filament and setting density and diameter fields to None, should result in 422 error."""
     # Setup