diff --git a/README.md b/README.md
index db50c9c..d91d8c5 100644
--- a/README.md
+++ b/README.md
@@ -105,12 +105,22 @@ users may find useful:
     to you, if you need to pin your usage to a particular, supported
     WherobotsDB version. Defaults to `"latest"`.
 * `session_type`: `"single"` or `"multi"`; if set to `"single"`, then
-   each call to `connect()` establishes an exclusive connection to a
-   distinct and dedicated Wherobots runtime; if set to "multi", then
-   multiple `connect()` calls with the same arguments and credentials
-   will connect to the same shared Wherobots runtime; `"multi"` is the
-   default.
-
-   Consider multi-session for potential cost savings, but be mindful of
-   performance impacts from shared resources. You might need to adjust
-   cluster size if slowdowns occur, which could affect overall cost.
+    each call to `connect()` establishes an exclusive connection to a
+    distinct and dedicated Wherobots runtime; if set to "multi", then
+    multiple `connect()` calls with the same arguments and credentials
+    will connect to the same shared Wherobots runtime; `"multi"` is the
+    default.
+
+    Consider multi-session for potential cost savings, but be mindful of
+    performance impacts from shared resources. You might need to adjust
+    cluster size if slowdowns occur, which could affect overall cost.
+* `shutdown_after_inactive_seconds`: how long the runtime waits and
+    stays running after all clients have disconnected. This delay gives
+    an opportunity for clients to reconnect to a previously-established
+    runtime without having to start a new one.
+
+    If you're using a simple "connect-query-disconnect" pattern from
+    your application, you can set this parameter to a value greater than
+    your expected time between queries and effectively get a continuously
+    running SQL session runtime without any complex connection management
+    in your application.
diff --git a/pyproject.toml b/pyproject.toml
index e94eeaa..fc98594 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,9 +1,9 @@
 [project]
 name = "wherobots-python-dbapi"
-version = "0.19.0"
+version = "0.20.0"
 description = "Python DB-API driver for Wherobots DB"
 authors = [{ name = "Maxime Petazzoni", email = "max@wherobots.com" }]
-requires-python = "~=3.8"
+requires-python = ">=3.8, <4"
 readme = "README.md"
 license = "Apache-2.0"
 dependencies = [
diff --git a/tests/smoke.py b/tests/smoke.py
index d12a80d..06a0ddf 100644
--- a/tests/smoke.py
+++ b/tests/smoke.py
@@ -14,6 +14,7 @@
 from wherobots.db.constants import DEFAULT_ENDPOINT, DEFAULT_SESSION_TYPE
 from wherobots.db.connection import Connection
 from wherobots.db.region import Region
+from wherobots.db.runtime import Runtime
 from wherobots.db.session_type import SessionType
 
 if __name__ == "__main__":
@@ -21,6 +22,7 @@
     parser.add_argument("--api-key-file", help="File containing the API key")
     parser.add_argument("--token-file", help="File containing the token")
     parser.add_argument("--region", help="Region to connect to (ie. aws-us-west-2)")
+    parser.add_argument("--runtime", help="Runtime type (ie. tiny)")
     parser.add_argument("--version", help="Runtime version (ie. latest)")
     parser.add_argument(
         "--session-type",
@@ -83,6 +85,7 @@
             api_key=api_key,
             shutdown_after_inactive_seconds=args.shutdown_after_inactive_seconds,
             wait_timeout=900,
+            runtime=Runtime(args.runtime) if args.runtime else Runtime.MICRO,
             region=Region(args.region) if args.region else Region.AWS_US_WEST_2,
             version=args.version,
             session_type=SessionType(args.session_type),
diff --git a/uv.lock b/uv.lock
index 1bcd952..1d73065 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1,5 +1,5 @@
 version = 1
-revision = 2
+revision = 3
 requires-python = ">=3.8, <4"
 resolution-markers = [
     "python_full_version >= '3.12'",
@@ -1593,7 +1593,7 @@ wheels = [
 
 [[package]]
 name = "wherobots-python-dbapi"
-version = "0.19.0"
+version = "0.20.0"
 source = { editable = "." }
 dependencies = [
     { name = "cbor2" },
diff --git a/wherobots/db/runtime.py b/wherobots/db/runtime.py
index 0872159..7458666 100644
--- a/wherobots/db/runtime.py
+++ b/wherobots/db/runtime.py
@@ -2,6 +2,7 @@
 
 
 class Runtime(Enum):
+    MICRO = "micro"
     TINY = "tiny"
     SMALL = "small"
     MEDIUM = "medium"