diff --git a/efile_app/efile/services/filing_code_search.py b/efile_app/efile/services/filing_code_search.py
index 109bc839..d5ca0ddd 100644
--- a/efile_app/efile/services/filing_code_search.py
+++ b/efile_app/efile/services/filing_code_search.py
@@ -922,7 +922,7 @@ def filter_filing_groups(
 
 def filing_groups(index, query, initial, courts=()):
     fingerprint = hashlib.sha256(f"{index.pk}:{index.refreshed_at}:{initial}:{query}:{courts}".encode()).hexdigest()
-    key = f"filing-groups-v7:{fingerprint}"
+    key = f"filing-groups-v8:{fingerprint}"
     cached = cache.get(key)
     if cached is not None:
         return cached
@@ -936,7 +936,8 @@ def filing_groups(index, query, initial, courts=()):
     )
     groups = {}
     for label in labels:
-        name = label["filing_type__name"]
+        # SQLite's JSON key lookup decodes numeric-looking names, such as Illinois' "97" case type.
+        name = str(label["filing_type__name"])
         group_key = filing_group_key(name, index.jurisdiction)
         group = groups.setdefault(
             group_key, {"key": group_key, "variants": [], "path_count": 0, "rank": 0, "name_rank": 0, "_labels": []}
@@ -947,8 +948,8 @@ def filing_groups(index, query, initial, courts=()):
                 "path_count": label["path_count"],
                 "rank": label["rank"],
                 "name_rank": label["name_rank"],
-                "category": label["case_category__name"],
-                "case_type": label["case_type__name"],
+                "category": str(label["case_category__name"]),
+                "case_type": str(label["case_type__name"]),
             }
         )
         group["variants"].append(name)
@@ -1137,7 +1138,7 @@ def search_grouped_paths(
         .distinct()
     )
     return {
-        "courts": [{"code": row["court__code"], "name": row["court__name"]} for row in courts],
+        "courts": [{"code": str(row["court__code"]), "name": str(row["court__name"])} for row in courts],
         "corrected_terms": corrected,
     }
 
diff --git a/efile_app/efile/tests/test_filing_code_search.py b/efile_app/efile/tests/test_filing_code_search.py
index b1c51744..7f360d7d 100644
--- a/efile_app/efile/tests/test_filing_code_search.py
+++ b/efile_app/efile/tests/test_filing_code_search.py
@@ -522,6 +522,19 @@ def test_grouped_endpoint_keeps_court_selection_separate(signed_in, index):
     assert signed_in.get(URL, params).status_code == 409
 
 
+def test_numeric_code_names_stay_text_in_grouped_search(catalog):
+    # Illinois has a case type named "97"; SQLite's JSON key lookup decodes it as a number.
+    catalog.types.return_value = [option("97", "97")]
+    catalog.courts.return_value = [option("42", "42")]
+    refresh_index("massachusetts")
+    result = search_grouped_paths(current_index("massachusetts"), "complaint", initial=True)
+    assert [group["name"] for group in result["groups"]] == ["Summary Process Complaint"]
+    courts = search_grouped_paths(
+        current_index("massachusetts"), "complaint", initial=True, group_key=result["groups"][0]["key"]
+    )["courts"]
+    assert courts == [{"code": "42", "name": "42"}]
+
+
 def test_refresh_resumes_completed_courts_after_late_failure(catalog, tmp_path):
     def fail_district(court, category, initial):
         if court == "district":