diff --git a/src/Clients/FileClient.cs b/src/Clients/FileClient.cs
index 04b0e12..dcd4af0 100644
--- a/src/Clients/FileClient.cs
+++ b/src/Clients/FileClient.cs
@@ -54,12 +54,12 @@ public FileClient(ProjectManagerClient client)
         /// </summary>
         /// <param name="documentId">The unique identifier of the document to download</param>
         /// <param name="type">If you specify a type of `html`, processes the file using text encoding, otherwise binary</param>
-        public async Task<AstroResult<byte>> DownloadFile(Guid documentId, string type = null)
+        public async Task<AstroResult<byte[]>> DownloadFile(Guid documentId, string type = null)
         {
             var url = $"/api/data/files/{documentId}/download";
             var options = new Dictionary<string, object>();
             if (type != null) { options["type"] = type; }
-            return await _client.Request<byte>(HttpMethod.Get, url, options, null, null);
+            return await _client.Request<byte[]>(HttpMethod.Get, url, options, null, null);
         }
 
         /// <summary>
@@ -76,10 +76,10 @@ public async Task<AstroResult<byte>> DownloadFile(Guid documentId, string type =
         /// occurs, you will receive a JSON result with error information.
         /// </summary>
         /// <param name="documentId">The unique identifier of the document for which to download the thumbnail.</param>
-        public async Task<AstroResult<byte>> DownloadaThumbnailImage(Guid documentId)
+        public async Task<AstroResult<byte[]>> DownloadaThumbnailImage(Guid documentId)
         {
             var url = $"/api/data/files/{documentId}/thumbnail";
-            return await _client.Request<byte>(HttpMethod.Get, url, null, null, null);
+            return await _client.Request<byte[]>(HttpMethod.Get, url, null, null, null);
         }
 
         /// <summary>
diff --git a/src/Clients/TeamsClient.cs b/src/Clients/TeamsClient.cs
index ab167ca..539f0fe 100644
--- a/src/Clients/TeamsClient.cs
+++ b/src/Clients/TeamsClient.cs
@@ -44,10 +44,10 @@ public TeamsClient(ProjectManagerClient client)
         /// The Teams API is intended for use by ProjectManager and its business development partners.  Please
         /// contact ProjectManager&#39;s sales team to request use of this API.
         /// </summary>
-        public async Task<AstroResult<byte>> RetrievezipfileforTeamsIntegrations()
+        public async Task<AstroResult<byte[]>> RetrievezipfileforTeamsIntegrations()
         {
             var url = $"/api/data/integrations/teams/application";
-            return await _client.Request<byte>(HttpMethod.Get, url, null, null, null);
+            return await _client.Request<byte[]>(HttpMethod.Get, url, null, null, null);
         }
     }
 }
diff --git a/src/Interfaces/IFileClient.cs b/src/Interfaces/IFileClient.cs
index b6abce3..a853009 100644
--- a/src/Interfaces/IFileClient.cs
+++ b/src/Interfaces/IFileClient.cs
@@ -43,7 +43,7 @@ public interface IFileClient
         /// </summary>
         /// <param name="documentId">The unique identifier of the document to download</param>
         /// <param name="type">If you specify a type of `html`, processes the file using text encoding, otherwise binary</param>
-        Task<AstroResult<byte>> DownloadFile(Guid documentId, string type = null);
+        Task<AstroResult<byte[]>> DownloadFile(Guid documentId, string type = null);
 
         /// <summary>
         /// Downloads a thumbnail image associated with a document that was previously uploaded to ProjectManager.com.
@@ -59,7 +59,7 @@ public interface IFileClient
         /// occurs, you will receive a JSON result with error information.
         /// </summary>
         /// <param name="documentId">The unique identifier of the document for which to download the thumbnail.</param>
-        Task<AstroResult<byte>> DownloadaThumbnailImage(Guid documentId);
+        Task<AstroResult<byte[]>> DownloadaThumbnailImage(Guid documentId);
 
         /// <summary>
         /// Updates information about a File uploaded to your Workspace.
diff --git a/src/Interfaces/ITeamsClient.cs b/src/Interfaces/ITeamsClient.cs
index 779ebba..0cf5163 100644
--- a/src/Interfaces/ITeamsClient.cs
+++ b/src/Interfaces/ITeamsClient.cs
@@ -33,6 +33,6 @@ public interface ITeamsClient
         /// The Teams API is intended for use by ProjectManager and its business development partners.  Please
         /// contact ProjectManager&#39;s sales team to request use of this API.
         /// </summary>
-        Task<AstroResult<byte>> RetrievezipfileforTeamsIntegrations();
+        Task<AstroResult<byte[]>> RetrievezipfileforTeamsIntegrations();
     }
 }