diff --git a/samples/snippets/requirements.txt b/samples/snippets/requirements.txt
index 32e0def..7e75181 100644
--- a/samples/snippets/requirements.txt
+++ b/samples/snippets/requirements.txt
@@ -1,6 +1,6 @@
 google-cloud-pubsub==1.4.3
 google-cloud-containeranalysis==0.3.1
-grafeas==0.1.0
+grafeas==0.4.0
 pytest==5.3.0; python_version > "3.0"
 pytest==4.6.6; python_version < "3.0"
 flaky==3.6.1
diff --git a/samples/snippets/samples.py b/samples/snippets/samples.py
index 2eeda1c..c663e4d 100644
--- a/samples/snippets/samples.py
+++ b/samples/snippets/samples.py
@@ -32,7 +32,7 @@ def create_note(note_id, project_id):
                 {
                     'affected_cpe_uri': 'your-uri-here',
                     'affected_package': 'your-package-here',
-                    'min_affected_version': {
+                    'affected_version_start': {
                         'kind': Version.VersionKind.MINIMUM
                     },
                     'fixed_version': {
@@ -88,7 +88,7 @@ def create_occurrence(resource_url, note_id, occurrence_project, note_project):
                 {
                     'affected_cpe_uri': 'your-uri-here',
                     'affected_package': 'your-package-here',
-                    'min_affected_version': {
+                    'affected_version': {
                         'kind': Version.VersionKind.MINIMUM
                     },
                     'fixed_version': {
diff --git a/samples/snippets/samples_test.py b/samples/snippets/samples_test.py
index a8552e5..535544e 100644
--- a/samples/snippets/samples_test.py
+++ b/samples/snippets/samples_test.py
@@ -267,7 +267,7 @@ def test_find_high_severity_vulnerabilities(self):
                     {
                         'affected_cpe_uri': 'your-uri-here',
                         'affected_package': 'your-package-here',
-                        'min_affected_version': {
+                        'affected_version_start': {
                             'kind': Version.VersionKind.MINIMUM
                         },
                         'fixed_version': {
@@ -288,7 +288,7 @@ def test_find_high_severity_vulnerabilities(self):
                     {
                         'affected_cpe_uri': 'your-uri-here',
                         'affected_package': 'your-package-here',
-                        'min_affected_version': {
+                        'affected_version': {
                             'kind': Version.VersionKind.MINIMUM
                         },
                         'fixed_version': {