diff --git a/lms/djangoapps/learner_home/serializers.py b/lms/djangoapps/learner_home/serializers.py
index cd796d0851..48d041ee35 100644
--- a/lms/djangoapps/learner_home/serializers.py
+++ b/lms/djangoapps/learner_home/serializers.py
@@ -50,6 +50,7 @@ class CourseRunSerializer(serializers.Serializer):
     minPassingGrade = serializers.DecimalField(
         max_digits=5, decimal_places=2, source="course_overview.lowest_passing_grade"
     )
+    startDate = serializers.DateTimeField(source="course_overview.start")
     endDate = serializers.DateTimeField(source="course_overview.end")
     homeUrl = serializers.SerializerMethodField()
     marketingUrl = serializers.URLField(
@@ -180,12 +181,9 @@ class CertificateSerializer(serializers.Serializer):
 
     availableDate = serializers.DateTimeField(allow_null=True)
     isRestricted = serializers.BooleanField()
-    isAvailable = serializers.BooleanField()
     isEarned = serializers.BooleanField()
     isDownloadable = serializers.BooleanField()
     certPreviewUrl = serializers.URLField(allow_null=True)
-    certDownloadUrl = serializers.URLField(allow_null=True)
-    honorCertDownloadUrl = serializers.URLField(allow_null=True)
 
 
 class AvailableEntitlementSessionSerializer(serializers.Serializer):
diff --git a/lms/djangoapps/learner_home/test_serializers.py b/lms/djangoapps/learner_home/test_serializers.py
index 4a069c3d8f..d759fe4b29 100644
--- a/lms/djangoapps/learner_home/test_serializers.py
+++ b/lms/djangoapps/learner_home/test_serializers.py
@@ -283,12 +283,9 @@ class TestCertificateSerializer(TestCase):
         assert output_data == {
             "availableDate": datetime_to_django_format(input_data["availableDate"]),
             "isRestricted": input_data["isRestricted"],
-            "isAvailable": input_data["isAvailable"],
             "isEarned": input_data["isEarned"],
             "isDownloadable": input_data["isDownloadable"],
             "certPreviewUrl": input_data["certPreviewUrl"],
-            "certDownloadUrl": input_data["certDownloadUrl"],
-            "honorCertDownloadUrl": input_data["honorCertDownloadUrl"],
         }