diff --git a/tile_generator/config.py b/tile_generator/config.py
index 9f2203c..5a26ddd 100644
--- a/tile_generator/config.py
+++ b/tile_generator/config.py
@@ -308,12 +308,20 @@ def validate(self):
 
 	def default_stemcell(self):
 		stemcell_criteria = self.get('stemcell_criteria', {})
-		stemcell_criteria['os'] = stemcell_criteria.get('os', 'ubuntu-xenial')
+		stemcell_criteria['os'] = stemcell_criteria.get('os', 'ubuntu-jammy')
 		stemcell_criteria['version'] = stemcell_criteria.get('version', self.latest_stemcell(stemcell_criteria['os']))
 		return stemcell_criteria
 
 	def latest_stemcell(self, os):
-		if os == 'ubuntu-xenial':
+		if os == 'ubuntu-jammy':
+			headers = { 'Accept': 'application/json' }
+			response = requests.get('https://network.pivotal.io/api/v2/products/stemcells-ubuntu-jammy/releases', headers=headers)
+			response.raise_for_status()
+			releases = response.json()['releases']
+			versions = [r['version'] for r in releases]
+			latest_major = sorted(versions, key=float)[-1].split('.')[0]
+			return latest_major
+		elif os == 'ubuntu-xenial':
 			headers = { 'Accept': 'application/json' }
 			response = requests.get('https://network.pivotal.io/api/v2/products/stemcells-ubuntu-xenial/releases', headers=headers)
 			response.raise_for_status()
diff --git a/tile_generator/test_config_expected_output.json b/tile_generator/test_config_expected_output.json
index 4f2963c..958130b 100644
--- a/tile_generator/test_config_expected_output.json
+++ b/tile_generator/test_config_expected_output.json
@@ -4240,7 +4240,7 @@
   "space": "test-tile-space",
   "standalone": false,
   "stemcell_criteria": {
-    "os": "ubuntu-xenial",
+    "os": "ubuntu-jammy",
     "version": "1234"
   },
   "update": {
@@ -4251,4 +4251,4 @@
   },
   "verbose": false,
   "version": "0.0.1"
-}
\ No newline at end of file
+}
diff --git a/tile_generator/test_metadata_expected_output.yml b/tile_generator/test_metadata_expected_output.yml
index 181e379..85ad62c 100644
--- a/tile_generator/test_metadata_expected_output.yml
+++ b/tile_generator/test_metadata_expected_output.yml
@@ -18,7 +18,7 @@ standalone: false
 releases:
 
 stemcell_criteria:
-  os: ubuntu-xenial
+  os: ubuntu-jammy
   requires_cpi: false
   version: '1234'