diff --git a/CHANGELOG.md b/CHANGELOG.md
index a73b0de7..9b39ed7d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -50,7 +50,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - `fiboa publish` no longer uploads to S3 or generates README/LICENSE files. It now creates GeoParquet, PMTiles and a STAC Collection with relative links, checksums and web-map-links.
 - Updated `aiohttp` to support Zenodo responses that include both returned `Content-Type` headers.
 - Improved geometry axis handling so generated tiles and bounding boxes keep x/y order consistent in output.
-- Updated vecorel-cli to 0.4.0:
+- Updated vecorel-cli to 0.4.1:
+  - A converter can set `request_headers` for its downloads, e.g. a browser User-Agent.
+  - The DuckDB converter downloads archives and other sources it cannot read in place also without a cache, and no longer turns `key=value` folders in a path into columns.
   - GeoParquet files under 250,000 rows get at least ten row groups, so a reader can skip by area.
   - `create-stac-collection` takes the bbox from the geometries, in EPSG:4326.
   - **Breaking:** `fiboa merge` keeps all properties by default (`--include`/`--exclude` restrict them), fails if the merged file would be invalid (`--no-strict` warns instead), and refuses datasets with different specification or extension versions.
@@ -75,6 +77,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - FR: Editions now cover 2017-2024, mapped through one shared crop code list (https://fiboa.org/code/fr/fr.csv).
 - HR: Editions now cover 2011-2024.
 - IT-1: Reads the JRC's newest EuroCrops V2 release (`gpqtv202`).
+- JP: Reads MAFF's own Fude Polygon downloads instead of Pacific Spatial's copy, which adds the 2025 and 2026 editions.
 - LV:
   - Editions now cover 2015-2025 from yearly data.gov.lv releases.
   - `block_id` is published from the field-block identifier and `crop:name` comes from the official code list.
diff --git a/fiboa_cli/datasets/jp.py b/fiboa_cli/datasets/jp.py
index d2174330..07026765 100644
--- a/fiboa_cli/datasets/jp.py
+++ b/fiboa_cli/datasets/jp.py
@@ -1,14 +1,30 @@
+import os
+import zipfile
+
+import geopandas as gpd
+import pandas as pd
+import pyogrio
+import requests
 from vecorel_cli.conversion.duckdb import DuckDBBaseConverter
 
 from ..conversion.fiboa_converter import FiboaBaseConverter
 
+API = "https://restapi.fude.maff.go.jp"
+BASE = "https://opendata.fude.maff.go.jp"
+# MAFF's CDN refuses requests that do not look like a browser
+HEADERS = {
+    "User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126 Safari/537.36"
+}
+PREFECTURES = [f"{code:02d}" for code in range(1, 48)]
+
 
 class JPConverter(DuckDBBaseConverter, FiboaBaseConverter):
+    # One zip of municipality GeoJSONs per prefecture; the URLs only work signed, see download_files
     variants = {
-        "2024": "https://data.source.coop/pacificspatial/field-polygon-jp/parquet/jp_field_polygons_2024.parquet",
-        "2023": "https://data.source.coop/pacificspatial/field-polygon-jp/parquet/jp_field_polygons_2023.parquet",
-        "2022": "https://data.source.coop/pacificspatial/field-polygon-jp/parquet/jp_field_polygons_2022.parquet",
-        "2021": "https://data.source.coop/pacificspatial/field-polygon-jp/parquet/jp_field_polygons_2021.parquet",
+        str(year): {
+            f"{BASE}/{year}/{year}_{pref}.zip": f"jp_fude_{year}_{pref}.zip" for pref in PREFECTURES
+        }
+        for year in range(2026, 2020, -1)
     }
 
     id = "jp"
@@ -21,19 +37,21 @@ class JPConverter(DuckDBBaseConverter, FiboaBaseConverter):
 current conditions. Fude Polygons are created for the purpose of roughly indicating the locations of farmland.
     """
 
-    provider = "Japanese Ministry of Agriculture, Forestry and Fisheries (MAFF, 農林水産省) <https://www.maff.go.jp/>"
-    attribution = "Fude Polygon Data (2021-2024). Japanese Ministry of Agriculture, Forestry and Fisheries. Processed by Pacific Spatial Solutions, Inc"
+    provider = "Japanese Ministry of Agriculture, Forestry and Fisheries (MAFF, 農林水産省) <https://download.fude.maff.go.jp/>"
+    attribution = "出典：「筆ポリゴンデータ」（農林水産省）を加工して作成"
     license = "CC-BY-4.0"
+    request_headers = HEADERS
 
     columns = {
-        "GEOM": "geometry",
+        "geometry": "geometry",
         "polygon_uuid": "id",
-        "land_type_en": "land_type_en",
+        "land_type": "land_type_en",
         "local_government_cd": "admin_local_code",
         "issue_year": "determination:datetime",
     }
     # SQL migrations (DuckDB converter): per-feature determination date from the issue year
     column_migrations = {
+        "land_type": "CASE land_type WHEN 100 THEN 'rice_field' WHEN 200 THEN 'field' END",
         "issue_year": "make_timestamp(CAST(issue_year AS INTEGER), 1, 1, 0, 0, 0) AT TIME ZONE 'UTC'",
     }
     missing_schemas = {
@@ -42,3 +60,66 @@ class JPConverter(DuckDBBaseConverter, FiboaBaseConverter):
             "admin_local_code": {"type": "string"},
         }
     }
+
+    def select_variant(self, variant):
+        super().select_variant(variant)
+        # MAFF's terms ask for this wording, naming the edition and that it was processed
+        self.attribution = (
+            f"出典：「筆ポリゴンデータ（{self.variant}年度公開）」（農林水産省）を加工して作成"
+        )
+
+    def download_files(self, uris, cache_folder=None, **kwargs):
+        cache_fs, cache_folder = self.get_cache(cache_folder)
+        paths = []
+        for uri, name in uris.items():
+            if uri.startswith(BASE) and not cache_fs.exists(os.path.join(cache_folder, name)):
+                uri = self.sign([uri])[uri]
+            for path in super().download_files({uri: name}, cache_folder, **kwargs):
+                paths.append(
+                    self.to_parquet(path[0] if isinstance(path, tuple) else path, cache_folder)
+                )
+        return paths
+
+    def sign(self, uris):
+        """The download URLs of the API, signed for 30 minutes, for the given unsigned URLs."""
+        if not uris:
+            return {}
+        prefectures = [uri.rsplit("_", 1)[1].removesuffix(".zip") for uri in uris]
+        body = {
+            "issue_year": self.variant,
+            "pref_cd": prefectures,
+            "pref_name": self.prefecture_names(prefectures),
+            "city_cd": [],
+            "city_name": [],
+        }
+        response = requests.post(
+            f"{API}/download/lambda-download", json=body, headers=HEADERS, timeout=60
+        )
+        response.raise_for_status()
+        signed = {found["url"].split("?")[0]: found["url"] for found in response.json()["found"]}
+        return {uri: signed[uri] for uri in uris}
+
+    def prefecture_names(self, codes):
+        url = f"{API}/getprefcitycd/lambda-getprefcitycd?issue_year={self.variant}"
+        response = requests.get(url, headers=HEADERS, timeout=60)
+        response.raise_for_status()
+        names = {p["pref_cd"]: p["pref_name"] for p in response.json()[0]}
+        return [names[code] for code in codes]
+
+    def to_parquet(self, zip_path, cache_folder):
+        """One GeoParquet file of all municipality GeoJSONs in a prefecture zip, kept in the cache."""
+        stem = os.path.splitext(os.path.basename(zip_path))[0]
+        target = os.path.join(cache_folder, f"extracted.{stem}", f"{stem}.parquet")
+        if os.path.exists(target):
+            return target
+        os.makedirs(os.path.dirname(target), exist_ok=True)
+        with zipfile.ZipFile(zip_path) as archive:
+            members = sorted(n for n in archive.namelist() if n.endswith(".json"))
+        frames = [pyogrio.read_dataframe(f"/vsizip/{zip_path}/{member}") for member in members]
+        gdf = gpd.GeoDataFrame(pd.concat(frames, ignore_index=True), crs=frames[0].crs)
+        # each geometry declares JGD2011, which GDAL ignores
+        gdf = gdf.set_crs(6668, allow_override=True)
+        temporary_target = target + ".part"
+        gdf.drop(columns=["history"]).to_parquet(temporary_target)
+        os.replace(temporary_target, target)
+        return target
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       - pypi: https://files.pythonhosted.org/packages/e1/07/c6fe3ad3e685340704d314d765b7912993bcb8dc198f0e7a89382d37974b/win32_setctime-1.2.0-py3-none-any.whl
       - pypi: https://files.pythonhosted.org/packages/f5/01/349c0386caedbbe488d519f252df54efac8a1459282d466c474bdd84a620/yarl-1.25.1-cp314-cp314-win_amd64.whl
@@ -4765,9 +4765,9 @@ packages:
 - pypi: ./
   name: fiboa-cli
   version: 0.21.0
-  sha256: 0bc20c88d77a364347f871a2c3f14049f11fe421a5e2b321e013435351ada440
+  sha256: cc05f5ea116fe87497bf02339b7f9bf7546850874c5fdd2d7da25d109dd97f56
   requires_dist:
-  - vecorel-cli==0.4.0
+  - vecorel-cli==0.4.1
   - beautifulsoup4>=4.12
   - spdx-license-list==3.27.0
   requires_python: '>=3.11'
@@ -13091,10 +13091,10 @@ packages:
   purls: []
   size: 155910
   timestamp: 1785359349999
-- pypi: https://files.pythonhosted.org/packages/6d/0b/10bac3a0771493d8582235a17206109af678e8177e2e85464c79e7ead13f/vecorel_cli-0.4.0-py3-none-any.whl
+- pypi: https://files.pythonhosted.org/packages/6d/81/ad34b5cb65bed8ac70e1eb4fb19a9978ef5bab5b94c2261e053d161ff137/vecorel_cli-0.4.1-py3-none-any.whl
   name: vecorel-cli
-  version: 0.4.0
-  sha256: 725e479bd55635719e05b905d08a0106c2f3a9c0105c423d9986b444368fae93
+  version: 0.4.1
+  sha256: 7d08ad5a1193ac8c25d16da13cbf78dc441ce8b5746427979dfe7a15b7bd27d9
   requires_dist:
   - pyyaml>=6.0,<7.0
   - click>=8.1,<9.0
diff --git a/pyproject.toml b/pyproject.toml
index d6cb60eb..a97c66bc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ classifiers = [
 ]
 requires-python = ">=3.11"
 dependencies = [
-    "vecorel-cli==0.4.0",
+    "vecorel-cli==0.4.1",
     "beautifulsoup4>=4.12",
     "spdx-license-list==3.27.0",
 ]
diff --git a/tests/data-files/convert/jp/jp_field_polygons_2024.parquet b/tests/data-files/convert/jp/jp_field_polygons_2024.parquet
deleted file mode 100644
index 384fa415..00000000
Binary files a/tests/data-files/convert/jp/jp_field_polygons_2024.parquet and /dev/null differ
diff --git a/tests/data-files/convert/jp/jp_fude_2026_13.zip b/tests/data-files/convert/jp/jp_fude_2026_13.zip
new file mode 100644
index 00000000..b66c82c0
Binary files /dev/null and b/tests/data-files/convert/jp/jp_fude_2026_13.zip differ
diff --git a/tests/test_convert.py b/tests/test_convert.py
index 797ed5ac..86f5f2b3 100644
--- a/tests/test_convert.py
+++ b/tests/test_convert.py
@@ -137,6 +137,7 @@ def _input_files(converter, *names):
     "es_nc": {"variant": "2025", **_input_files("es_nc", "es_nc.gpkg")},
     "ai4sf": _input_files("ai4sf", "1_vietnam_areas.gpkg", "4_cambodia_areas.gpkg"),
     "nl": {"variant": "2023"},
+    "jp": {"variant": "2026", **_input_files("jp", "jp_fude_2026_13.zip")},
     "dk#2008": {"variant": "2008"},
     "pt": {"variant": "2023"},
     **{f"pt#{year}": {"variant": year} for year in PT_EDITIONS},
diff --git a/tests/test_convert_jp.py b/tests/test_convert_jp.py
new file mode 100644
index 00000000..c40a473d
--- /dev/null
+++ b/tests/test_convert_jp.py
@@ -0,0 +1,139 @@
+"""Tests for the JP converter's download path.
+
+MAFF's download URLs only work signed, so the converter asks the API to sign the files
+that are not cached yet. These tests answer the API with a fake service and record
+what reaches the regular download.
+"""
+
+import os
+import shutil
+
+import pytest
+from vecorel_cli.conversion.base import BaseConverter
+
+from fiboa_cli.datasets import jp
+
+FIXTURE = "tests/data-files/convert/jp/jp_fude_2026_13.zip"
+NAMES = {"01": "北海道", "13": "東京都"}
+
+
+class FakeAPI:
+    """Signs every requested prefecture and records the requests."""
+
+    def __init__(self):
+        self.posts = []
+        self.gets = []
+
+    def get(self, url, headers=None, **kwargs):
+        self.gets.append((url, headers))
+        return FakeResponse([[{"pref_cd": c, "pref_name": n} for c, n in NAMES.items()]])
+
+    def post(self, url, json=None, headers=None, **kwargs):
+        self.posts.append((url, json, headers))
+        found = [
+            {"url": f"{jp.BASE}/{json['issue_year']}/{json['issue_year']}_{code}.zip?sig=x"}
+            for code in json["pref_cd"]
+        ]
+        return FakeResponse({"found": found})
+
+
+class FakeResponse:
+    def __init__(self, body):
+        self.body = body
+
+    def raise_for_status(self):
+        pass
+
+    def json(self):
+        return self.body
+
+
+@pytest.fixture
+def setup(monkeypatch, tmp_path):
+    api = FakeAPI()
+    monkeypatch.setattr(jp.requests, "get", api.get)
+    monkeypatch.setattr(jp.requests, "post", api.post)
+
+    downloads = []
+
+    def download_files(self, uris, cache_folder=None, **kwargs):
+        downloads.append((dict(uris), kwargs))
+        paths = []
+        for name in uris.values():
+            path = tmp_path / "cache" / name
+            if not path.exists():
+                shutil.copy(FIXTURE, path)
+            paths.append(str(path))
+        return paths
+
+    monkeypatch.setattr(BaseConverter, "download_files", download_files)
+    (tmp_path / "cache").mkdir()
+
+    converter = jp.JPConverter()
+    converter.select_variant("2026")
+    return converter, api, downloads, tmp_path / "cache"
+
+
+def maff(pref):
+    return f"{jp.BASE}/2026/2026_{pref}.zip"
+
+
+def test_signs_the_missing_files_only(setup):
+    converter, api, downloads, cache = setup
+    shutil.copy(FIXTURE, cache / "jp_fude_2026_01.zip")
+    uris = {maff("01"): "jp_fude_2026_01.zip", maff("13"): "jp_fude_2026_13.zip"}
+
+    paths = converter.download_files(uris, str(cache))
+
+    assert len(api.posts) == 1
+    url, body, headers = api.posts[0]
+    assert url.endswith("/download/lambda-download")
+    assert body["issue_year"] == "2026"
+    assert body["pref_cd"] == ["13"]
+    assert body["pref_name"] == ["東京都"]
+    assert headers == jp.HEADERS
+    forwarded = {uri: name for batch, _ in downloads for uri, name in batch.items()}
+    assert forwarded == {
+        maff("01"): "jp_fude_2026_01.zip",
+        f"{maff('13')}?sig=x": "jp_fude_2026_13.zip",
+    }
+    assert converter.request_headers == jp.HEADERS
+    assert [os.path.basename(p) for p in paths] == [
+        "jp_fude_2026_01.parquet",
+        "jp_fude_2026_13.parquet",
+    ]
+
+
+def test_signs_everything_when_nothing_is_cached(setup):
+    converter, api, downloads, cache = setup
+    uris = {maff("01"): "jp_fude_2026_01.zip", maff("13"): "jp_fude_2026_13.zip"}
+
+    converter.download_files(uris, str(cache))
+
+    # each file is signed just before its download, as a signature lasts 30 minutes
+    assert [body["pref_cd"] for _, body, _ in api.posts] == [["01"], ["13"]]
+    assert [body["pref_name"] for _, body, _ in api.posts] == [["北海道"], ["東京都"]]
+    assert [list(batch) for batch, _ in downloads] == [
+        [f"{maff('01')}?sig=x"],
+        [f"{maff('13')}?sig=x"],
+    ]
+
+
+def test_a_complete_cache_needs_no_api(setup):
+    converter, api, downloads, cache = setup
+    shutil.copy(FIXTURE, cache / "jp_fude_2026_13.zip")
+
+    converter.download_files({maff("13"): "jp_fude_2026_13.zip"}, str(cache))
+
+    assert api.posts == [] and api.gets == []
+    assert downloads[0][0] == {maff("13"): "jp_fude_2026_13.zip"}
+
+
+def test_other_urls_are_not_signed(setup):
+    converter, api, downloads, cache = setup
+    mirror = "https://mirror.example/tokyo.zip"
+
+    converter.download_files({mirror: "jp_fude_2026_13.zip"}, str(cache))
+
+    assert api.posts == [] and api.gets == []
+    assert downloads[0][0] == {mirror: "jp_fude_2026_13.zip"}