diff --git a/app/services/results_utils.py b/app/services/results_utils.py
index 9276a81..93c24e4 100644
--- a/app/services/results_utils.py
+++ b/app/services/results_utils.py
@@ -474,7 +474,7 @@ def classify_boltz_proteinfold_output(
     sample_id_pattern = re.escape(sample_id) if sample_id else "single_prediction"
     return classify_proteinfold_output_key(
         key,
-        pdb_pattern=rf"/boltz/top_ranked_structures/{sample_id_pattern}\.pdb",
+        pdb_pattern=rf"/boltz/top_ranked_structures/{sample_id_pattern}\.(?:cif|pdb)",
         # Find across all subfolders
         stats_pattern=rf"/boltz/{sample_id_pattern}/.+\.tsv",
         alignment_pattern=rf"/mmseqs/{sample_id_pattern}\.a3m",
diff --git a/tests/test_services_results_utils.py b/tests/test_services_results_utils.py
index de2732b..95b5e79 100644
--- a/tests/test_services_results_utils.py
+++ b/tests/test_services_results_utils.py
@@ -437,6 +437,9 @@ def test_boltz_proteinfold_helpers_classify_keys_and_build_prefixes():
     assert classify_boltz_proteinfold_output(
         f"{run.id}/boltz/top_ranked_structures/T1024.pdb", "T1024"
     ) == ClassifiedOutput("pdb", "T1024.pdb")
+    assert classify_boltz_proteinfold_output(
+        f"{run.id}/boltz/top_ranked_structures/T1024.cif", "T1024"
+    ) == ClassifiedOutput("pdb", "T1024.cif")
     assert classify_boltz_proteinfold_output(
         f"{run.id}/boltz/T1024/abcd1234.tsv", "T1024"
     ) == ClassifiedOutput("stats_csv", "abcd1234.tsv")