diff --git a/solrorbit/conversion/query.py b/solrorbit/conversion/query.py
index 5b4b2766..432b22b0 100644
--- a/solrorbit/conversion/query.py
+++ b/solrorbit/conversion/query.py
@@ -181,13 +181,24 @@ def _translate_query_node(node: dict, fq_list: list = None) -> str:
     if "range" in node:
         for field, bounds in node["range"].items():
             field = normalize_field_name(field)
-            lo = bounds.get("gte", bounds.get("gt", "*"))
-            hi = bounds.get("lte", bounds.get("lt", "*"))
+            # gt/lt are exclusive; Solr spells that with a curly bracket.
+            if "gte" in bounds:
+                lo, lo_bracket = bounds["gte"], "["
+            elif "gt" in bounds:
+                lo, lo_bracket = bounds["gt"], "{"
+            else:
+                lo, lo_bracket = "*", "["
+            if "lte" in bounds:
+                hi, hi_bracket = bounds["lte"], "]"
+            elif "lt" in bounds:
+                hi, hi_bracket = bounds["lt"], "}"
+            else:
+                hi, hi_bracket = "*", "]"
             # Convert dates if format is specified (common for date fields)
             os_format = bounds.get("format")
             lo = _convert_date_to_solr_format(lo, os_format)
             hi = _convert_date_to_solr_format(hi, os_format)
-            return f"{field}:[{lo} TO {hi}]"
+            return f"{field}:{lo_bracket}{lo} TO {hi}{hi_bracket}"
 
     if "exists" in node:
         field = node["exists"].get("field", "*")
diff --git a/tests/unit/solr/test_workload_converter.py b/tests/unit/solr/test_workload_converter.py
index 1927a4cf..423dc9c7 100644
--- a/tests/unit/solr/test_workload_converter.py
+++ b/tests/unit/solr/test_workload_converter.py
@@ -209,11 +209,24 @@ def test_term_query(self):
         result = translate_to_solr_json_dsl(body)
         self.assertIn("vendor_id", result["query"])
 
+    def _range(self, bounds):
+        return translate_to_solr_json_dsl(
+            {"query": {"range": {"fare_amount": bounds}}})["query"]
+
     def test_range_query(self):
-        body = {"query": {"range": {"fare_amount": {"gte": 5, "lte": 100}}}}
-        result = translate_to_solr_json_dsl(body)
-        self.assertIn("fare_amount", result["query"])
-        self.assertIn("TO", result["query"])
+        self.assertEqual("fare_amount:[5 TO 100]", self._range({"gte": 5, "lte": 100}))
+
+    def test_exclusive_bounds_use_curly_brackets(self):
+        self.assertEqual("fare_amount:[5 TO 100}", self._range({"gte": 5, "lt": 100}))
+        self.assertEqual("fare_amount:{5 TO 100]", self._range({"gt": 5, "lte": 100}))
+        self.assertEqual("fare_amount:{5 TO 100}", self._range({"gt": 5, "lt": 100}))
+
+    def test_a_missing_bound_is_open_and_inclusive(self):
+        # An absent bound is `*`, which has nothing to exclude.
+        self.assertEqual("fare_amount:[5 TO *]", self._range({"gte": 5}))
+        self.assertEqual("fare_amount:{5 TO *]", self._range({"gt": 5}))
+        self.assertEqual("fare_amount:[* TO 100}", self._range({"lt": 100}))
+        self.assertEqual("fare_amount:[* TO 100]", self._range({"lte": 100}))
 
     def test_bool_with_filter_goes_to_fq(self):
         body = {