diff --git a/vertexai/reasoning_engines/_reasoning_engines.py b/vertexai/reasoning_engines/_reasoning_engines.py
index 8798fb83c3..c157bba126 100644
--- a/vertexai/reasoning_engines/_reasoning_engines.py
+++ b/vertexai/reasoning_engines/_reasoning_engines.py
@@ -48,7 +48,7 @@
 
 
 _LOGGER = base.Logger(__name__)
-_SUPPORTED_PYTHON_VERSIONS = ("3.8", "3.9", "3.10", "3.11")
+_SUPPORTED_PYTHON_VERSIONS = ("3.8", "3.9", "3.10", "3.11", "3.12")
 _DEFAULT_GCS_DIR_NAME = "reasoning_engine"
 _BLOB_FILENAME = "reasoning_engine.pkl"
 _REQUIREMENTS_FILE = "requirements.txt"
@@ -224,8 +224,9 @@ def create(
                 use for staging the artifacts needed.
             sys_version (str):
                 Optional. The Python system version used. Currently supports any
-                of "3.8", "3.9", "3.10", "3.11". If not specified, it defaults
-                to the "{major}.{minor}" attributes of sys.version_info.
+                of "3.8", "3.9", "3.10", "3.11", "3.12". If not specified,
+                it defaults to the "{major}.{minor}" attributes of
+                sys.version_info.
             extra_packages (Sequence[str]):
                 Optional. The set of extra user-provided packages (if any).