diff --git a/howso/client/base.py b/howso/client/base.py
index 8d96c850..78d0f2af 100644
--- a/howso/client/base.py
+++ b/howso/client/base.py
@@ -2163,7 +2163,9 @@ def react(  # noqa: C901
         leave_case_out : bool, default False
             If set to True and specified along with case_indices,
             each individual react will respectively ignore the corresponding
-            case specified by case_indices by leaving it out.
+            case specified by case_indices by leaving it out. If set to True
+            without specified case_indices, then the first trained case
+            with matching context values will be ignored.
         mutate_schema_features : iterable of str, optional
             List of semi-structured features whose values will be mutated,
             possibly changing their schema in generative reacts. Ignored in
diff --git a/howso/engine/trainee.py b/howso/engine/trainee.py
index 61c24af5..6ab35776 100644
--- a/howso/engine/trainee.py
+++ b/howso/engine/trainee.py
@@ -1819,7 +1819,9 @@ def react(
         leave_case_out : bool, default False
             When True and specified along with ``case_indices``, each individual
             react will respectively ignore the corresponding case specified
-            by ``case_indices`` by leaving it out.
+            by ``case_indices`` by leaving it out. When True
+            without specified case_indices, the first trained case
+            with matching context values will be ignored.
         mutate_schema_features : list of str, optional
             List of semi-structured features whose values will be mutated,
             possibly changing their schema in generative reacts. Ignored in
diff --git a/version.json b/version.json
index 80753637..227c88c5 100644
--- a/version.json
+++ b/version.json
@@ -1,5 +1,5 @@
 {
   "dependencies": {
-    "howso-engine": "116.3.2"
+    "howso-engine": "116.4.0"
   }
 }