diff --git a/src/objects/api/constants.py b/src/objects/api/constants.py
index 6e4e61fa..a85a012e 100644
--- a/src/objects/api/constants.py
+++ b/src/objects/api/constants.py
@@ -9,4 +9,4 @@ class Operators(models.TextChoices):
     lt = "lt", _("lower than")
     lte = "lte", _("lower than or equal to")
     icontains = "icontains", _("case-insensitive partial match")
-    in_list = "in", _("contains")
+    in_list = "in", _("in a list of values seperated by `|`")
diff --git a/src/objects/api/v1/openapi.yaml b/src/objects/api/v1/openapi.yaml
index b86a6b24..00b6cc04 100644
--- a/src/objects/api/v1/openapi.yaml
+++ b/src/objects/api/v1/openapi.yaml
@@ -106,6 +106,7 @@ paths:
           * `lt` - lower than
           * `lte` - lower than or equal to
           * `icontains` - case-insensitive partial match
+          * `in` - in a list of values seperated by `|`
 
           `value` may not contain double underscore or comma characters.
           `key` may not contain comma characters and includes double underscore only if it indicates nested attributes.
@@ -537,6 +538,7 @@ paths:
                       * `lt` - lower than
                       * `lte` - lower than or equal to
                       * `icontains` - case-insensitive partial match
+                      * `in` - in a list of values seperated by `|`
 
                       `value` may not contain double underscore or comma characters.
                       `key` may not contain comma characters and includes double underscore only if it indicates nested attributes.
diff --git a/src/objects/api/v2/openapi.yaml b/src/objects/api/v2/openapi.yaml
index a2d5409b..e9585683 100644
--- a/src/objects/api/v2/openapi.yaml
+++ b/src/objects/api/v2/openapi.yaml
@@ -106,6 +106,7 @@ paths:
           * `lt` - lower than
           * `lte` - lower than or equal to
           * `icontains` - case-insensitive partial match
+          * `in` - in a list of values seperated by `|`
 
           `value` may not contain double underscore or comma characters.
           `key` may not contain comma characters and includes double underscore only if it indicates nested attributes.
@@ -587,6 +588,7 @@ paths:
                       * `lt` - lower than
                       * `lte` - lower than or equal to
                       * `icontains` - case-insensitive partial match
+                      * `in` - in a list of values seperated by `|`
 
                       `value` may not contain double underscore or comma characters.
                       `key` may not contain comma characters and includes double underscore only if it indicates nested attributes.