diff --git a/siskin/conversions.py b/siskin/conversions.py
index 052f1942..b97403d6 100644
--- a/siskin/conversions.py
+++ b/siskin/conversions.py
@@ -50,6 +50,17 @@
 
 from siskin.utils import URLCache
 
+try:
+    from lingua import LanguageDetectorBuilder
+
+    language_detector = (
+        LanguageDetectorBuilder.from_all_languages()
+        .with_preloaded_language_models()
+        .build()
+    )
+except ImportError:
+    language_detector = None
+
 html_escape_table = {'"': """, "'": "'"}
 html_unescape_table = {v: k for k, v in html_escape_table.items()}
 
@@ -396,15 +407,10 @@ def find_osf_language(doc, with_default="eng"):
         """
         if not attrs.get("description"):
             return with_default
-        try:
-            import cld3
-            from iso639 import languages
-
-            result = cld3.get_language(attrs["description"])
-            if not result.is_reliable:
-                return with_default
-            return languages.get(alpha2=result.language).part2b
-        except (ImportError, KeyError):
+        if language_detector is not None:
+            lang = language_detector.detect_language_of(attrs["description"])
+            return lang.iso_code_639_3.name.lower()
+        else:
             return with_default
 
     def fetch_authors(doc, force=False, best_effort=False, max_retries=5):
diff --git a/siskin/test_conversions.py b/siskin/test_conversions.py
index 7404bf56..1b05777f 100644
--- a/siskin/test_conversions.py
+++ b/siskin/test_conversions.py
@@ -257,11 +257,11 @@ def test_osf_to_intermediate():
                 "pernyataan Allah m",
                 "authors": [{"rft.aufirst": "Ceria", "rft.aulast": "Ceria"}],
                 "doi": "10.31219/osf.io/egcsk",
-                "finc.format": "Article",
-                "finc.id": "ai-191-egcsk",
-                "finc.mega_collection": ["sid-191-col-osf", "Osf"],
-                "finc.source_id": "191",
-                "languages": ["eng"],
+                "finc.format": "Preprint",
+                "finc.id": "ai-179-egcsk",
+                "finc.mega_collection": ["sid-179-col-osf", "Osf"],
+                "finc.source_id": "179",
+                "languages": ["ind"],
                 "rft.atitle": "Konsep Allah Dalam Teologi Proses",
                 "rft.date": "2021-07-19",
                 "rft.genre": "article",