diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 8be1c79..a2fb2bb 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -20,7 +20,7 @@ jobs:
 
   smoke:
     name: Smoke test snap
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     timeout-minutes: 5
     needs:
       - lint
diff --git a/tests/test_smoke.py b/tests/test_smoke.py
index 3d11c77..2079de4 100644
--- a/tests/test_smoke.py
+++ b/tests/test_smoke.py
@@ -8,10 +8,6 @@ def test_install():
     with open("snap/snapcraft.yaml") as file:
         snapcraft = yaml.safe_load(file)
 
-        subprocess.run(
-            f"sudo snap install core24".split(),
-            check=True,
-        )
         subprocess.run(
             f"sudo snap install ./{snapcraft['name']}_{snapcraft['version']}_amd64.snap --devmode".split(),
             check=True,
@@ -55,8 +51,6 @@ def test_all_apps():
                 subprocess.run(
                     f"{snapcraft['name']}.{app} {override.get(app, '--help')}".split(),
                     check=True,
-                    capture_output=True,
-                    text=True,
                 )
 
 
diff --git a/tox.ini b/tox.ini
index 635e8e2..82c6e77 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,8 +4,8 @@ env_list = lint,smoke
 
 [testenv]
 setenv =
-	version=16.4
-	channel=16.4/edge
+	version=16.6
+	channel=16.6/edge
 	vm-repo=https://github.com/canonical/postgresql-operator.git
 allowlist_externals =
     poetry