diff --git a/CHANGELOG.md b/CHANGELOG.md
index 44af12f7..3edbfe27 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -41,6 +41,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - ES-CL: the ITACyL server is https-only, the 2025 shapefiles sit in province subfolders, and C_REFREC is the identifier
 - A test refuses a fixture above 5 MB, committed or merely lying in the fixture folder, because a failing convert test downloads the real source there
 - ES-MD: find RECINTO.shp wherever the archive puts it
+- ES-AN: CD_USO is the land-use column, with the determination date from the variant year
 - HR: editions 2011-2024; the archives leave their CRS undefined and carry ARKOD's own parcel id, which the row index used to overwrite
 - NL: the full BRP series 2009-2026 — the 2009-2019 zips hold a FileGDB with differently prefixed columns, 2020 is a GeoPackage, and the download moved to a new PDOK location
 - SI: editions back to 2019 — the archives differ per campaign in their folder layout, CRS declaration, column names and crop-code padding
diff --git a/fiboa_cli/datasets/es_an.py b/fiboa_cli/datasets/es_an.py
index b484f3a0..6fcf1fa9 100644
--- a/fiboa_cli/datasets/es_an.py
+++ b/fiboa_cli/datasets/es_an.py
@@ -45,11 +45,13 @@ class ANConverter(ESBaseConverter):
         "crop:name_en": "crop:name_en",
     }
 
+    use_code_attribute = "CD_USO"
     area_is_in_ha = False
     area_calculate_missing = True
+    use_variant_as_determination = True
 
-    column_additions = ESBaseConverter.column_additions | {
-        "determination:datetime": "2024-03-28T00:00:00Z",
+    column_migrations = {
+        "ID_RECINTO": lambda col: col.astype("int64"),
     }
 
     missing_schemas = {
diff --git a/tests/data-files/convert/es_an/SP25_REC_PROV_04.zip b/tests/data-files/convert/es_an/SP25_REC_PROV_04.zip
new file mode 100644
index 00000000..6b3b2e42
Binary files /dev/null and b/tests/data-files/convert/es_an/SP25_REC_PROV_04.zip differ
diff --git a/tests/test_convert.py b/tests/test_convert.py
index 6783e45e..5317fa3c 100644
--- a/tests/test_convert.py
+++ b/tests/test_convert.py
@@ -50,6 +50,7 @@
     "ie",
     "es_cat",
     "es_cl",
+    "es_an",
     "es_cm",
     "es",
     "nz",