diff --git a/build/docker/Dockerfile b/build/docker/Dockerfile
index 812c1ffbf2..da5432a522 100644
--- a/build/docker/Dockerfile
+++ b/build/docker/Dockerfile
@@ -1,5 +1,5 @@
 # Start from the sdk image
-FROM mcr.microsoft.com/dotnet/sdk:5.0.203-alpine3.12@sha256:4fe96d2e0ad763284c5a222efb5e7098c84c1bce8fcb18c2f896c547963de1a5 AS build
+FROM mcr.microsoft.com/dotnet/sdk:5.0.300-alpine3.12@sha256:cd03cb780dc61a1ef6e450a9e7025aa34c15a2c03e8a62a5dcfe7f490f7d2905 AS build
 
 # Set the working directory to where the source is located
 WORKDIR /src
diff --git a/converter/dicom-cast/build/docker/Dockerfile b/converter/dicom-cast/build/docker/Dockerfile
index 00268b6127..ba8c443e61 100644
--- a/converter/dicom-cast/build/docker/Dockerfile
+++ b/converter/dicom-cast/build/docker/Dockerfile
@@ -1,5 +1,5 @@
 # Start from the sdk image
-FROM mcr.microsoft.com/dotnet/sdk:5.0.203-alpine3.12@sha256:4fe96d2e0ad763284c5a222efb5e7098c84c1bce8fcb18c2f896c547963de1a5 AS build
+FROM mcr.microsoft.com/dotnet/sdk:5.0.300-alpine3.12@sha256:cd03cb780dc61a1ef6e450a9e7025aa34c15a2c03e8a62a5dcfe7f490f7d2905 AS build
 
 # Set the working directory to where the source is located
 WORKDIR /dicom-cast/src
diff --git a/global.json b/global.json
index 50d490cffa..a601da31bb 100644
--- a/global.json
+++ b/global.json
@@ -1,5 +1,5 @@
 {
   "sdk": {
-    "version": "5.0.203"
+    "version": "5.0.300"
   }
 }
diff --git a/test/Microsoft.Health.Dicom.Tests.Integration/Persistence/Models/SeriesMetadata.cs b/test/Microsoft.Health.Dicom.Tests.Integration/Persistence/Models/SeriesMetadata.cs
index 0ffa14144f..2cbf3c9bfc 100644
--- a/test/Microsoft.Health.Dicom.Tests.Integration/Persistence/Models/SeriesMetadata.cs
+++ b/test/Microsoft.Health.Dicom.Tests.Integration/Persistence/Models/SeriesMetadata.cs
@@ -27,7 +27,7 @@ public SeriesMetadata(SqlDataReader sqlDataReader)
             StudyKey = sqlDataReader.GetInt64(1);
             SeriesInstanceUid = sqlDataReader.GetString(2);
             Modality = sqlDataReader.GetString(3);
-            PerformedProcedureStepStartDate = sqlDataReader.IsDBNull(4) ? null : (DateTime?)sqlDataReader.GetDateTime(4);
+            PerformedProcedureStepStartDate = sqlDataReader.IsDBNull(4) ? null : sqlDataReader.GetDateTime(4);
         }
 
         public long SeriesKey { get; private set; }
diff --git a/test/Microsoft.Health.Dicom.Tests.Integration/Persistence/Models/StudyMetadata.cs b/test/Microsoft.Health.Dicom.Tests.Integration/Persistence/Models/StudyMetadata.cs
index c723e4ebd6..8a63b8a65e 100644
--- a/test/Microsoft.Health.Dicom.Tests.Integration/Persistence/Models/StudyMetadata.cs
+++ b/test/Microsoft.Health.Dicom.Tests.Integration/Persistence/Models/StudyMetadata.cs
@@ -39,7 +39,7 @@ public StudyMetadata(SqlDataReader sqlDataReader)
             PatientID = sqlDataReader.GetString(2);
             PatientName = sqlDataReader.GetString(3);
             ReferringPhysicianName = sqlDataReader.GetString(4);
-            StudyDate = sqlDataReader.IsDBNull(5) ? null : (DateTime?)sqlDataReader.GetDateTime(5);
+            StudyDate = sqlDataReader.IsDBNull(5) ? null : sqlDataReader.GetDateTime(5);
             StudyDescription = sqlDataReader.GetString(6);
             AccessionNumber = sqlDataReader.GetString(7);
         }
diff --git a/test/Microsoft.Health.Dicom.Tests.Integration/Persistence/SqlIndexDataStoreTestHelper.cs b/test/Microsoft.Health.Dicom.Tests.Integration/Persistence/SqlIndexDataStoreTestHelper.cs
index 4f59c3dcef..7769c79cf0 100644
--- a/test/Microsoft.Health.Dicom.Tests.Integration/Persistence/SqlIndexDataStoreTestHelper.cs
+++ b/test/Microsoft.Health.Dicom.Tests.Integration/Persistence/SqlIndexDataStoreTestHelper.cs
@@ -179,8 +179,8 @@ public async Task<IReadOnlyList<DeletedInstance>> GetDeletedInstanceEntriesAsync
                         ORDER BY {VLatest.DeletedInstance.Watermark}";
 
                     sqlCommand.Parameters.AddWithValue("@studyInstanceUid", studyInstanceUid);
-                    sqlCommand.Parameters.AddWithValue("@seriesInstanceUid", string.IsNullOrEmpty(seriesInstanceUid) ? DBNull.Value : (object)seriesInstanceUid);
-                    sqlCommand.Parameters.AddWithValue("@sopInstanceUid", string.IsNullOrEmpty(sopInstanceUid) ? DBNull.Value : (object)sopInstanceUid);
+                    sqlCommand.Parameters.AddWithValue("@seriesInstanceUid", string.IsNullOrEmpty(seriesInstanceUid) ? DBNull.Value : seriesInstanceUid);
+                    sqlCommand.Parameters.AddWithValue("@sopInstanceUid", string.IsNullOrEmpty(sopInstanceUid) ? DBNull.Value : sopInstanceUid);
 
                     using (SqlDataReader sqlDataReader = await sqlCommand.ExecuteReaderAsync())
                     {