diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 774500bf..69f5f4dd 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.134.0"
+  ".": "0.135.0"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 57441236..ee0b07e0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.135.0](https://github.com/kernel/kernel-python-sdk/compare/v0.134.0...v0.135.0) (2026-10-28)
+
+
+### Features
+
+* api: sort API keys by last_used_at ([3501230](https://github.com/kernel/kernel-python-sdk/commit/3501230a16dd8fddf7cc29a1595a68d793fb44ef))
+
 ## [0.134.0](https://github.com/kernel/kernel-python-sdk/compare/v0.133.0...v0.134.0) (2026-10-28)
 
 
diff --git a/pyproject.toml b/pyproject.toml
index 1cd696b3..a1eef8ba 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "kernel"
-version = "0.134.0"
+version = "0.135.0"
 description = "The official Python library for the kernel API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/kernel/_version.py b/src/kernel/_version.py
index 11d1945f..67655316 100644
--- a/src/kernel/_version.py
+++ b/src/kernel/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "kernel"
-__version__ = "0.134.0"  # x-release-please-version
+__version__ = "0.135.0"  # x-release-please-version
diff --git a/src/kernel/resources/api_keys.py b/src/kernel/resources/api_keys.py
index 09c7f22a..0365fd1e 100644
--- a/src/kernel/resources/api_keys.py
+++ b/src/kernel/resources/api_keys.py
@@ -219,7 +219,7 @@ def list(
         name: str | Omit = omit,
         offset: int | Omit = omit,
         query: str | Omit = omit,
-        sort_by: Literal["created_at", "name", "expires_at"] | Omit = omit,
+        sort_by: Literal["created_at", "name", "expires_at", "last_used_at"] | Omit = omit,
         sort_direction: Literal["asc", "desc"] | Omit = omit,
         status: Literal["active", "deleted", "all"] | Omit = omit,
         # Use the following arguments if you need to pass additional parameters to the API that aren't available via kwargs.
@@ -249,7 +249,8 @@ def list(
           query: Case-insensitive substring match against API key name, creator, and project. API
               key identifiers and masked keys match by exact value or prefix.
 
-          sort_by: Field to sort API keys by.
+          sort_by: Field to sort API keys by. Keys with no expiry or no recorded use sort last for
+              expires_at and last_used_at in either direction.
 
           sort_direction: Sort direction for API keys.
 
@@ -578,7 +579,7 @@ def list(
         name: str | Omit = omit,
         offset: int | Omit = omit,
         query: str | Omit = omit,
-        sort_by: Literal["created_at", "name", "expires_at"] | Omit = omit,
+        sort_by: Literal["created_at", "name", "expires_at", "last_used_at"] | Omit = omit,
         sort_direction: Literal["asc", "desc"] | Omit = omit,
         status: Literal["active", "deleted", "all"] | Omit = omit,
         # Use the following arguments if you need to pass additional parameters to the API that aren't available via kwargs.
@@ -608,7 +609,8 @@ def list(
           query: Case-insensitive substring match against API key name, creator, and project. API
               key identifiers and masked keys match by exact value or prefix.
 
-          sort_by: Field to sort API keys by.
+          sort_by: Field to sort API keys by. Keys with no expiry or no recorded use sort last for
+              expires_at and last_used_at in either direction.
 
           sort_direction: Sort direction for API keys.
 
diff --git a/src/kernel/types/api_key_list_params.py b/src/kernel/types/api_key_list_params.py
index 95b8af5f..780dbf04 100644
--- a/src/kernel/types/api_key_list_params.py
+++ b/src/kernel/types/api_key_list_params.py
@@ -36,8 +36,12 @@ class APIKeyListParams(TypedDict, total=False):
     API key identifiers and masked keys match by exact value or prefix.
     """
 
-    sort_by: Literal["created_at", "name", "expires_at"]
-    """Field to sort API keys by."""
+    sort_by: Literal["created_at", "name", "expires_at", "last_used_at"]
+    """Field to sort API keys by.
+
+    Keys with no expiry or no recorded use sort last for expires_at and last_used_at
+    in either direction.
+    """
 
     sort_direction: Literal["asc", "desc"]
     """Sort direction for API keys."""