diff --git a/.openapi-generator/FILES b/.openapi-generator/FILES
index 75a51835..54b0bf58 100644
--- a/.openapi-generator/FILES
+++ b/.openapi-generator/FILES
@@ -40,9 +40,11 @@ docs/RuleActionType.md
 docs/SDK.md
 docs/SealedResults.md
 docs/SearchEventsBot.md
+docs/SearchEventsEndParameter.md
 docs/SearchEventsIncrementalIdentificationStatus.md
 docs/SearchEventsRareDevicePercentileBucket.md
 docs/SearchEventsSdkPlatform.md
+docs/SearchEventsStartParameter.md
 docs/SearchEventsVpnConfidence.md
 docs/SupplementaryIDHighRecall.md
 docs/TamperingConfidence.md
@@ -100,9 +102,11 @@ fingerprint_server_sdk/models/rule_action_header_field.py
 fingerprint_server_sdk/models/rule_action_type.py
 fingerprint_server_sdk/models/sdk.py
 fingerprint_server_sdk/models/search_events_bot.py
+fingerprint_server_sdk/models/search_events_end_parameter.py
 fingerprint_server_sdk/models/search_events_incremental_identification_status.py
 fingerprint_server_sdk/models/search_events_rare_device_percentile_bucket.py
 fingerprint_server_sdk/models/search_events_sdk_platform.py
+fingerprint_server_sdk/models/search_events_start_parameter.py
 fingerprint_server_sdk/models/search_events_vpn_confidence.py
 fingerprint_server_sdk/models/supplementary_id_high_recall.py
 fingerprint_server_sdk/models/tampering_confidence.py
diff --git a/README.md b/README.md
index 0abedbc2..84a27122 100644
--- a/README.md
+++ b/README.md
@@ -363,9 +363,11 @@ Class | Method | HTTP request | Description
  - [RuleActionType](docs/RuleActionType.md)
  - [SDK](docs/SDK.md)
  - [SearchEventsBot](docs/SearchEventsBot.md)
+ - [SearchEventsEndParameter](docs/SearchEventsEndParameter.md)
  - [SearchEventsIncrementalIdentificationStatus](docs/SearchEventsIncrementalIdentificationStatus.md)
  - [SearchEventsRareDevicePercentileBucket](docs/SearchEventsRareDevicePercentileBucket.md)
  - [SearchEventsSdkPlatform](docs/SearchEventsSdkPlatform.md)
+ - [SearchEventsStartParameter](docs/SearchEventsStartParameter.md)
  - [SearchEventsVpnConfidence](docs/SearchEventsVpnConfidence.md)
  - [SupplementaryIDHighRecall](docs/SupplementaryIDHighRecall.md)
  - [TamperingConfidence](docs/TamperingConfidence.md)
diff --git a/docs/FingerprintApi.md b/docs/FingerprintApi.md
index 4c39203f..5dcef4f3 100644
--- a/docs/FingerprintApi.md
+++ b/docs/FingerprintApi.md
@@ -252,8 +252,8 @@ url: str = 'url_example' # Filter events by the URL (`url` property) associated
 bundle_id: str = 'bundle_id_example' # Filter events by the Bundle ID (iOS) associated with the event.  (optional)
 package_name: str = 'package_name_example' # Filter events by the Package Name (Android) associated with the event.  (optional)
 origin: str = 'origin_example' # Filter events by the origin field of the event. This is applicable to web events only (e.g., https://example.com)  (optional)
-start: int = 1767225600000 # Include events that happened after this point (with timestamp greater than or equal the provided `start` Unix milliseconds value). Defaults to 7 days ago. Setting `start` does not change `end`'s default of `now` — adjust it separately if needed.  (optional)
-end: int = 1769903999000 # Include events that happened before this point (with timestamp less than or equal the provided `end` Unix milliseconds value). Defaults to now. Setting `end` does not change `start`'s default of `7 days ago` — adjust it separately if needed.  (optional)
+start: SearchEventsStartParameter = fingerprint_server_sdk.SearchEventsStartParameter() # Include events that happened after this point (with timestamp greater than or equal the provided `start` Unix milliseconds value or RFC3339 timestamp). Defaults to 7 days ago. Setting `start` does not change `end`'s default of `now` — adjust it separately if needed.  (optional)
+end: SearchEventsEndParameter = fingerprint_server_sdk.SearchEventsEndParameter() # Include events that happened before this point (with timestamp less than or equal the provided `end` Unix milliseconds value or RFC3339 timestamp). Defaults to now. Setting `end` does not change `start`'s default of `7 days ago` — adjust it separately if needed.  (optional)
 reverse: bool = True # When `true`, sort events oldest first (ascending timestamp order). Default is newest first (descending timestamp order).  (optional)
 suspect: bool = True # Filter events previously tagged as suspicious via the [Update API](https://docs.fingerprint.com/reference/server-api-v4-update-event). > Note: When using this parameter, only events with the `suspect` property explicitly set to `true` or `false` are returned. Events with undefined `suspect` property are left out of the response.  (optional)
 vpn: bool = True # Filter events by VPN Detection result. > Note: When using this parameter, only events with the `vpn` property set to `true` or `false` are returned. Events without a `vpn` Smart Signal result are left out of the response.  (optional)
@@ -318,8 +318,8 @@ Name | Type | Description  | Notes
  **bundle_id** | **str**| Filter events by the Bundle ID (iOS) associated with the event.  | [optional] 
  **package_name** | **str**| Filter events by the Package Name (Android) associated with the event.  | [optional] 
  **origin** | **str**| Filter events by the origin field of the event. This is applicable to web events only (e.g., https://example.com)  | [optional] 
- **start** | **int**| Include events that happened after this point (with timestamp greater than or equal the provided `start` Unix milliseconds value). Defaults to 7 days ago. Setting `start` does not change `end`'s default of `now` — adjust it separately if needed.  | [optional] 
- **end** | **int**| Include events that happened before this point (with timestamp less than or equal the provided `end` Unix milliseconds value). Defaults to now. Setting `end` does not change `start`'s default of `7 days ago` — adjust it separately if needed.  | [optional] 
+ **start** | [**SearchEventsStartParameter**](.md)| Include events that happened after this point (with timestamp greater than or equal the provided `start` Unix milliseconds value or RFC3339 timestamp). Defaults to 7 days ago. Setting `start` does not change `end`'s default of `now` — adjust it separately if needed.  | [optional] 
+ **end** | [**SearchEventsEndParameter**](.md)| Include events that happened before this point (with timestamp less than or equal the provided `end` Unix milliseconds value or RFC3339 timestamp). Defaults to now. Setting `end` does not change `start`'s default of `7 days ago` — adjust it separately if needed.  | [optional] 
  **reverse** | **bool**| When `true`, sort events oldest first (ascending timestamp order). Default is newest first (descending timestamp order).  | [optional] 
  **suspect** | **bool**| Filter events previously tagged as suspicious via the [Update API](https://docs.fingerprint.com/reference/server-api-v4-update-event). > Note: When using this parameter, only events with the `suspect` property explicitly set to `true` or `false` are returned. Events with undefined `suspect` property are left out of the response.  | [optional] 
  **vpn** | **bool**| Filter events by VPN Detection result. > Note: When using this parameter, only events with the `vpn` property set to `true` or `false` are returned. Events without a `vpn` Smart Signal result are left out of the response.  | [optional] 
diff --git a/docs/SearchEventsEndParameter.md b/docs/SearchEventsEndParameter.md
new file mode 100644
index 00000000..3a6341b1
--- /dev/null
+++ b/docs/SearchEventsEndParameter.md
@@ -0,0 +1,7 @@
+# SearchEventsEndParameter
+## Type alias
+
+`Union[datetime,int]`
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/docs/SearchEventsStartParameter.md b/docs/SearchEventsStartParameter.md
new file mode 100644
index 00000000..6fab9151
--- /dev/null
+++ b/docs/SearchEventsStartParameter.md
@@ -0,0 +1,7 @@
+# SearchEventsStartParameter
+## Type alias
+
+`Union[datetime,int]`
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/examples/search_events_example.py b/examples/search_events_example.py
index 5173598d..df78c520 100644
--- a/examples/search_events_example.py
+++ b/examples/search_events_example.py
@@ -20,11 +20,9 @@
 
 end = datetime.now(tz=timezone.utc)
 start = end - timedelta(days=7)
-start_timestamp = int(start.timestamp() * 1000)
-end_timestamp = int(end.timestamp() * 1000)
 
 try:
-    response = api_instance.search_events(limit=10, start=start_timestamp, end=end_timestamp)
+    response = api_instance.search_events(limit=10, start=start, end=end)
 
     print(f'Found {len(response.events)} events')
     for event in response.events:
@@ -35,8 +33,8 @@
         print(f'Fetching next page with pagination_key: {response.pagination_key}')
         next_page = api_instance.search_events(
             limit=10,
-            start=start_timestamp,
-            end=end_timestamp,
+            start=start,
+            end=end,
             pagination_key=response.pagination_key,
         )
         print(f'Found {len(next_page.events)} more events on next page')
diff --git a/fingerprint_server_sdk/__init__.py b/fingerprint_server_sdk/__init__.py
index 012853b5..13df7e7c 100644
--- a/fingerprint_server_sdk/__init__.py
+++ b/fingerprint_server_sdk/__init__.py
@@ -79,9 +79,11 @@
     'RuleActionType',
     'SDK',
     'SearchEventsBot',
+    'SearchEventsEndParameter',
     'SearchEventsIncrementalIdentificationStatus',
     'SearchEventsRareDevicePercentileBucket',
     'SearchEventsSdkPlatform',
+    'SearchEventsStartParameter',
     'SearchEventsVpnConfidence',
     'SupplementaryIDHighRecall',
     'TamperingConfidence',
@@ -160,6 +162,7 @@
 from fingerprint_server_sdk.models.rule_action_type import RuleActionType
 from fingerprint_server_sdk.models.sdk import SDK
 from fingerprint_server_sdk.models.search_events_bot import SearchEventsBot
+from fingerprint_server_sdk.models.search_events_end_parameter import SearchEventsEndParameter
 from fingerprint_server_sdk.models.search_events_incremental_identification_status import (
     SearchEventsIncrementalIdentificationStatus,
 )
@@ -167,6 +170,7 @@
     SearchEventsRareDevicePercentileBucket,
 )
 from fingerprint_server_sdk.models.search_events_sdk_platform import SearchEventsSdkPlatform
+from fingerprint_server_sdk.models.search_events_start_parameter import SearchEventsStartParameter
 from fingerprint_server_sdk.models.search_events_vpn_confidence import SearchEventsVpnConfidence
 from fingerprint_server_sdk.models.supplementary_id_high_recall import SupplementaryIDHighRecall
 from fingerprint_server_sdk.models.tampering_confidence import TamperingConfidence
diff --git a/fingerprint_server_sdk/api/fingerprint_api.py b/fingerprint_server_sdk/api/fingerprint_api.py
index 71dd5ed4..8598e213 100644
--- a/fingerprint_server_sdk/api/fingerprint_api.py
+++ b/fingerprint_server_sdk/api/fingerprint_api.py
@@ -10,6 +10,7 @@
 Do not edit the class manually.
 """  # noqa: E501
 
+from datetime import date, datetime
 from typing import Annotated, Any, Optional, Union  # noqa: UP035
 
 from pydantic import Field, StrictBool, StrictFloat, StrictInt, StrictStr, validate_call
@@ -21,6 +22,7 @@
 from fingerprint_server_sdk.models.event_search import EventSearch
 from fingerprint_server_sdk.models.event_update import EventUpdate
 from fingerprint_server_sdk.models.search_events_bot import SearchEventsBot
+from fingerprint_server_sdk.models.search_events_end_parameter import SearchEventsEndParameter
 from fingerprint_server_sdk.models.search_events_incremental_identification_status import (
     SearchEventsIncrementalIdentificationStatus,
 )
@@ -28,6 +30,7 @@
     SearchEventsRareDevicePercentileBucket,
 )
 from fingerprint_server_sdk.models.search_events_sdk_platform import SearchEventsSdkPlatform
+from fingerprint_server_sdk.models.search_events_start_parameter import SearchEventsStartParameter
 from fingerprint_server_sdk.models.search_events_vpn_confidence import SearchEventsVpnConfidence
 from fingerprint_server_sdk.rest import RESTResponseType
 
@@ -621,15 +624,15 @@ def search_events(
             ),
         ] = None,
         start: Annotated[
-            Optional[StrictInt],
+            Optional[SearchEventsStartParameter],
             Field(
-                description="Include events that happened after this point (with timestamp greater than or equal the provided `start` Unix milliseconds value). Defaults to 7 days ago. Setting `start` does not change `end`'s default of `now` — adjust it separately if needed. "
+                description="Include events that happened after this point (with timestamp greater than or equal the provided `start` Unix milliseconds value or RFC3339 timestamp). Defaults to 7 days ago. Setting `start` does not change `end`'s default of `now` — adjust it separately if needed. ",
             ),
         ] = None,
         end: Annotated[
-            Optional[StrictInt],
+            Optional[SearchEventsEndParameter],
             Field(
-                description="Include events that happened before this point (with timestamp less than or equal the provided `end` Unix milliseconds value). Defaults to now. Setting `end` does not change `start`'s default of `7 days ago` — adjust it separately if needed. "
+                description="Include events that happened before this point (with timestamp less than or equal the provided `end` Unix milliseconds value or RFC3339 timestamp). Defaults to now. Setting `end` does not change `start`'s default of `7 days ago` — adjust it separately if needed. ",
             ),
         ] = None,
         reverse: Annotated[
@@ -849,10 +852,10 @@ def search_events(
         :type package_name: str
         :param origin: Filter events by the origin field of the event. This is applicable to web events only (e.g., https://example.com)
         :type origin: str
-        :param start: Include events that happened after this point (with timestamp greater than or equal the provided `start` Unix milliseconds value). Defaults to 7 days ago. Setting `start` does not change `end`'s default of `now` — adjust it separately if needed.
-        :type start: int
-        :param end: Include events that happened before this point (with timestamp less than or equal the provided `end` Unix milliseconds value). Defaults to now. Setting `end` does not change `start`'s default of `7 days ago` — adjust it separately if needed.
-        :type end: int
+        :param start: Include events that happened after this point (with timestamp greater than or equal the provided `start` Unix milliseconds value or RFC3339 timestamp). Defaults to 7 days ago. Setting `start` does not change `end`'s default of `now` — adjust it separately if needed.
+        :type start: SearchEventsStartParameter
+        :param end: Include events that happened before this point (with timestamp less than or equal the provided `end` Unix milliseconds value or RFC3339 timestamp). Defaults to now. Setting `end` does not change `start`'s default of `7 days ago` — adjust it separately if needed.
+        :type end: SearchEventsEndParameter
         :param reverse: When `true`, sort events oldest first (ascending timestamp order). Default is newest first (descending timestamp order).
         :type reverse: bool
         :param suspect: Filter events previously tagged as suspicious via the [Update API](https://docs.fingerprint.com/reference/server-api-v4-update-event). > Note: When using this parameter, only events with the `suspect` property explicitly set to `true` or `false` are returned. Events with undefined `suspect` property are left out of the response.
@@ -1069,15 +1072,15 @@ def search_events_with_http_info(
             ),
         ] = None,
         start: Annotated[
-            Optional[StrictInt],
+            Optional[SearchEventsStartParameter],
             Field(
-                description="Include events that happened after this point (with timestamp greater than or equal the provided `start` Unix milliseconds value). Defaults to 7 days ago. Setting `start` does not change `end`'s default of `now` — adjust it separately if needed. "
+                description="Include events that happened after this point (with timestamp greater than or equal the provided `start` Unix milliseconds value or RFC3339 timestamp). Defaults to 7 days ago. Setting `start` does not change `end`'s default of `now` — adjust it separately if needed. ",
             ),
         ] = None,
         end: Annotated[
-            Optional[StrictInt],
+            Optional[SearchEventsEndParameter],
             Field(
-                description="Include events that happened before this point (with timestamp less than or equal the provided `end` Unix milliseconds value). Defaults to now. Setting `end` does not change `start`'s default of `7 days ago` — adjust it separately if needed. "
+                description="Include events that happened before this point (with timestamp less than or equal the provided `end` Unix milliseconds value or RFC3339 timestamp). Defaults to now. Setting `end` does not change `start`'s default of `7 days ago` — adjust it separately if needed. ",
             ),
         ] = None,
         reverse: Annotated[
@@ -1297,10 +1300,10 @@ def search_events_with_http_info(
         :type package_name: str
         :param origin: Filter events by the origin field of the event. This is applicable to web events only (e.g., https://example.com)
         :type origin: str
-        :param start: Include events that happened after this point (with timestamp greater than or equal the provided `start` Unix milliseconds value). Defaults to 7 days ago. Setting `start` does not change `end`'s default of `now` — adjust it separately if needed.
-        :type start: int
-        :param end: Include events that happened before this point (with timestamp less than or equal the provided `end` Unix milliseconds value). Defaults to now. Setting `end` does not change `start`'s default of `7 days ago` — adjust it separately if needed.
-        :type end: int
+        :param start: Include events that happened after this point (with timestamp greater than or equal the provided `start` Unix milliseconds value or RFC3339 timestamp). Defaults to 7 days ago. Setting `start` does not change `end`'s default of `now` — adjust it separately if needed.
+        :type start: SearchEventsStartParameter
+        :param end: Include events that happened before this point (with timestamp less than or equal the provided `end` Unix milliseconds value or RFC3339 timestamp). Defaults to now. Setting `end` does not change `start`'s default of `7 days ago` — adjust it separately if needed.
+        :type end: SearchEventsEndParameter
         :param reverse: When `true`, sort events oldest first (ascending timestamp order). Default is newest first (descending timestamp order).
         :type reverse: bool
         :param suspect: Filter events previously tagged as suspicious via the [Update API](https://docs.fingerprint.com/reference/server-api-v4-update-event). > Note: When using this parameter, only events with the `suspect` property explicitly set to `true` or `false` are returned. Events with undefined `suspect` property are left out of the response.
@@ -1517,15 +1520,15 @@ def search_events_without_preload_content(
             ),
         ] = None,
         start: Annotated[
-            Optional[StrictInt],
+            Optional[SearchEventsStartParameter],
             Field(
-                description="Include events that happened after this point (with timestamp greater than or equal the provided `start` Unix milliseconds value). Defaults to 7 days ago. Setting `start` does not change `end`'s default of `now` — adjust it separately if needed. "
+                description="Include events that happened after this point (with timestamp greater than or equal the provided `start` Unix milliseconds value or RFC3339 timestamp). Defaults to 7 days ago. Setting `start` does not change `end`'s default of `now` — adjust it separately if needed. ",
             ),
         ] = None,
         end: Annotated[
-            Optional[StrictInt],
+            Optional[SearchEventsEndParameter],
             Field(
-                description="Include events that happened before this point (with timestamp less than or equal the provided `end` Unix milliseconds value). Defaults to now. Setting `end` does not change `start`'s default of `7 days ago` — adjust it separately if needed. "
+                description="Include events that happened before this point (with timestamp less than or equal the provided `end` Unix milliseconds value or RFC3339 timestamp). Defaults to now. Setting `end` does not change `start`'s default of `7 days ago` — adjust it separately if needed. ",
             ),
         ] = None,
         reverse: Annotated[
@@ -1745,10 +1748,10 @@ def search_events_without_preload_content(
         :type package_name: str
         :param origin: Filter events by the origin field of the event. This is applicable to web events only (e.g., https://example.com)
         :type origin: str
-        :param start: Include events that happened after this point (with timestamp greater than or equal the provided `start` Unix milliseconds value). Defaults to 7 days ago. Setting `start` does not change `end`'s default of `now` — adjust it separately if needed.
-        :type start: int
-        :param end: Include events that happened before this point (with timestamp less than or equal the provided `end` Unix milliseconds value). Defaults to now. Setting `end` does not change `start`'s default of `7 days ago` — adjust it separately if needed.
-        :type end: int
+        :param start: Include events that happened after this point (with timestamp greater than or equal the provided `start` Unix milliseconds value or RFC3339 timestamp). Defaults to 7 days ago. Setting `start` does not change `end`'s default of `now` — adjust it separately if needed.
+        :type start: SearchEventsStartParameter
+        :param end: Include events that happened before this point (with timestamp less than or equal the provided `end` Unix milliseconds value or RFC3339 timestamp). Defaults to now. Setting `end` does not change `start`'s default of `7 days ago` — adjust it separately if needed.
+        :type end: SearchEventsEndParameter
         :param reverse: When `true`, sort events oldest first (ascending timestamp order). Default is newest first (descending timestamp order).
         :type reverse: bool
         :param suspect: Filter events previously tagged as suspicious via the [Update API](https://docs.fingerprint.com/reference/server-api-v4-update-event). > Note: When using this parameter, only events with the `suspect` property explicitly set to `true` or `false` are returned. Events with undefined `suspect` property are left out of the response.
@@ -1901,8 +1904,8 @@ def _search_events_serialize(
         bundle_id: Optional[str],
         package_name: Optional[str],
         origin: Optional[str],
-        start: Optional[int],
-        end: Optional[int],
+        start: Optional[SearchEventsStartParameter],
+        end: Optional[SearchEventsEndParameter],
         reverse: Optional[bool],
         suspect: Optional[bool],
         vpn: Optional[bool],
@@ -2002,12 +2005,20 @@ def _search_events_serialize(
 
         # process the query parameters
         if start is not None:
-            _query_params.append(('start', start))
-
+            if isinstance(start, datetime):
+                _query_params.append(('start', start.isoformat(timespec='microseconds')))
+            elif isinstance(start, date):
+                _query_params.append(('start', start.isoformat()))
+            else:
+                _query_params.append(('start', start))
         # process the query parameters
         if end is not None:
-            _query_params.append(('end', end))
-
+            if isinstance(end, datetime):
+                _query_params.append(('end', end.isoformat(timespec='microseconds')))
+            elif isinstance(end, date):
+                _query_params.append(('end', end.isoformat()))
+            else:
+                _query_params.append(('end', end))
         # process the query parameters
         if reverse is not None:
             _query_params.append(('reverse', reverse))
diff --git a/fingerprint_server_sdk/models/__init__.py b/fingerprint_server_sdk/models/__init__.py
index d452587d..a132d0f7 100644
--- a/fingerprint_server_sdk/models/__init__.py
+++ b/fingerprint_server_sdk/models/__init__.py
@@ -54,6 +54,7 @@
 from fingerprint_server_sdk.models.rule_action_type import RuleActionType
 from fingerprint_server_sdk.models.sdk import SDK
 from fingerprint_server_sdk.models.search_events_bot import SearchEventsBot
+from fingerprint_server_sdk.models.search_events_end_parameter import SearchEventsEndParameter
 from fingerprint_server_sdk.models.search_events_incremental_identification_status import (
     SearchEventsIncrementalIdentificationStatus,
 )
@@ -61,6 +62,7 @@
     SearchEventsRareDevicePercentileBucket,
 )
 from fingerprint_server_sdk.models.search_events_sdk_platform import SearchEventsSdkPlatform
+from fingerprint_server_sdk.models.search_events_start_parameter import SearchEventsStartParameter
 from fingerprint_server_sdk.models.search_events_vpn_confidence import SearchEventsVpnConfidence
 from fingerprint_server_sdk.models.supplementary_id_high_recall import SupplementaryIDHighRecall
 from fingerprint_server_sdk.models.tampering_confidence import TamperingConfidence
diff --git a/fingerprint_server_sdk/models/search_events_end_parameter.py b/fingerprint_server_sdk/models/search_events_end_parameter.py
new file mode 100644
index 00000000..f6e07dd2
--- /dev/null
+++ b/fingerprint_server_sdk/models/search_events_end_parameter.py
@@ -0,0 +1,17 @@
+"""
+Server API
+Fingerprint Server API allows you to get, search, and update Events in a server environment. It can be used for data exports, decision-making, and data analysis scenarios.
+Server API is intended for server-side usage, it's not intended to be used from the client side, whether it's a browser or a mobile device.
+
+The version of the OpenAPI document: 4
+Contact: support@fingerprint.com
+Generated by OpenAPI Generator (https://openapi-generator.tech)
+
+Do not edit the class manually.
+"""  # noqa: E501
+
+from typing import Union
+
+from pydantic import AwareDatetime
+
+SearchEventsEndParameter = Union[int, AwareDatetime]
diff --git a/fingerprint_server_sdk/models/search_events_start_parameter.py b/fingerprint_server_sdk/models/search_events_start_parameter.py
new file mode 100644
index 00000000..7004b67c
--- /dev/null
+++ b/fingerprint_server_sdk/models/search_events_start_parameter.py
@@ -0,0 +1,17 @@
+"""
+Server API
+Fingerprint Server API allows you to get, search, and update Events in a server environment. It can be used for data exports, decision-making, and data analysis scenarios.
+Server API is intended for server-side usage, it's not intended to be used from the client side, whether it's a browser or a mobile device.
+
+The version of the OpenAPI document: 4
+Contact: support@fingerprint.com
+Generated by OpenAPI Generator (https://openapi-generator.tech)
+
+Do not edit the class manually.
+"""  # noqa: E501
+
+from typing import Union
+
+from pydantic import AwareDatetime
+
+SearchEventsStartParameter = Union[int, AwareDatetime]
diff --git a/res/fingerprint-server-api.yaml b/res/fingerprint-server-api.yaml
index 9ac62608..a0c7bc86 100644
--- a/res/fingerprint-server-api.yaml
+++ b/res/fingerprint-server-api.yaml
@@ -379,25 +379,34 @@ paths:
         - name: start
           in: query
           schema:
-            type: integer
-            format: int64
-            example: 1767225600000
+            oneOf:
+              - type: integer
+                format: int64
+                example: 1767225600000
+              - type: string
+                format: date-time
+                example: '2026-01-01T00:00:00Z'
           description: >
             Include events that happened after this point (with timestamp
-            greater than or equal the provided `start` Unix milliseconds value).
-            Defaults to 7 days ago. Setting `start` does not change `end`'s
-            default of `now` — adjust it separately if needed.
+            greater than or equal the provided `start` Unix milliseconds value
+            or RFC3339 timestamp). Defaults to 7 days ago. Setting `start` does
+            not change `end`'s default of `now` — adjust it separately if
+            needed.
         - name: end
           in: query
           schema:
-            type: integer
-            format: int64
-            example: 1769903999000
+            oneOf:
+              - type: integer
+                format: int64
+                example: 1769903999000
+              - type: string
+                format: date-time
+                example: '2026-01-31T23:59:59Z'
           description: >
             Include events that happened before this point (with timestamp less
-            than or equal the provided `end` Unix milliseconds value). Defaults
-            to now. Setting `end` does not change `start`'s default of `7 days
-            ago` — adjust it separately if needed.
+            than or equal the provided `end` Unix milliseconds value or RFC3339
+            timestamp). Defaults to now. Setting `end` does not change `start`'s
+            default of `7 days ago` — adjust it separately if needed.
         - name: reverse
           in: query
           schema:
diff --git a/test/test_fingerprint_api.py b/test/test_fingerprint_api.py
index 79ef3f7c..e70ee2e3 100644
--- a/test/test_fingerprint_api.py
+++ b/test/test_fingerprint_api.py
@@ -1,4 +1,5 @@
 import unittest
+from datetime import datetime, timezone
 from urllib.parse import urlencode
 
 from fingerprint_server_sdk import (
@@ -328,6 +329,10 @@ def test_search_events(self) -> None:
         self.assertEqual(first_event.event_id, '1708102555327.NLOjmg')
 
     def test_search_events_all_params(self) -> None:
+        start_timestamp = 1582299576511
+        end_timestamp = 1582299576513
+        start_date = datetime.fromtimestamp(start_timestamp / 1000, tz=timezone.utc)
+
         """Test case for search_events with all available parameters"""
         api_params = {
             'limit': 1,
@@ -341,8 +346,8 @@ def test_search_events_all_params(self) -> None:
             'bundle_id': 'com.example.bundleId',
             'package_name': 'com.example',
             'origin': 'https://example.com',
-            'start': 1582299576511,
-            'end': 1582299576513,
+            'start': start_date,
+            'end': end_timestamp,
             'reverse': True,
             'suspect': False,
             'vpn': True,
@@ -389,8 +394,8 @@ def test_search_events_all_params(self) -> None:
             'bundle_id': 'com.example.bundleId',
             'package_name': 'com.example',
             'origin': 'https://example.com',
-            'start': 1582299576511,
-            'end': 1582299576513,
+            'start': start_date.isoformat(),
+            'end': end_timestamp,
             'reverse': 'true',
             'suspect': 'false',
             'vpn': 'true',