diff --git a/DotNET/Complex Flow Examples/decrypt-add-reencrypt.cs b/DotNET/Complex Flow Examples/decrypt-add-reencrypt.cs
index aaca601..fcb6b56 100644
--- a/DotNET/Complex Flow Examples/decrypt-add-reencrypt.cs	
+++ b/DotNET/Complex Flow Examples/decrypt-add-reencrypt.cs	
@@ -15,7 +15,7 @@
 using (var httpClient = new HttpClient { BaseAddress = new Uri("https://api.pdfrest.com") })
 {
     // Begin decryption
-    var decryptRequest = new HttpRequestMessage(HttpMethod.Post, "decrypted-pdf");
+    using var decryptRequest = new HttpRequestMessage(HttpMethod.Post, "decrypted-pdf");
 
     decryptRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
     decryptRequest.Headers.Accept.Add(new("application/json"));
@@ -42,7 +42,7 @@
     string decryptID = decryptJson.outputId;
 
     // Begin add image
-    var addImageRequest = new HttpRequestMessage(HttpMethod.Post, "pdf-with-added-image");
+    using var addImageRequest = new HttpRequestMessage(HttpMethod.Post, "pdf-with-added-image");
 
     addImageRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
     addImageRequest.Headers.Accept.Add(new("application/json"));
@@ -67,7 +67,7 @@
     addImageRequest.Content = addImageMultipartContent;
     var addImageResponse = await httpClient.SendAsync(addImageRequest);
 
-    var addImageResult = await addImageResponse.Content.ReadAsStringAsync();
+    using var addImageResult = await addImageResponse.Content.ReadAsStringAsync();
 
     Console.WriteLine("Add image response received.");
     Console.WriteLine(addImageResult);
diff --git a/DotNET/Complex Flow Examples/merge-different-file-types.cs b/DotNET/Complex Flow Examples/merge-different-file-types.cs
index 3b101cd..1abec57 100644
--- a/DotNET/Complex Flow Examples/merge-different-file-types.cs	
+++ b/DotNET/Complex Flow Examples/merge-different-file-types.cs	
@@ -18,7 +18,7 @@
 using (var httpClient = new HttpClient { BaseAddress = new Uri("https://api.pdfrest.com") })
 {
     // Begin first PDF conversion
-    var imageRequest = new HttpRequestMessage(HttpMethod.Post, "pdf");
+    using var imageRequest = new HttpRequestMessage(HttpMethod.Post, "pdf");
 
     imageRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
     imageRequest.Headers.Accept.Add(new("application/json"));
@@ -40,7 +40,7 @@
     string imageID = imageResponseData.outputId;
 
     // Begin second PDF conversion
-    var powerpointRequest = new HttpRequestMessage(HttpMethod.Post, "pdf");
+    using var powerpointRequest = new HttpRequestMessage(HttpMethod.Post, "pdf");
 
     powerpointRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
     powerpointRequest.Headers.Accept.Add(new("application/json"));
@@ -62,7 +62,7 @@
     string powerpointID = powerpointResponseData.outputId;
 
     // Begin file merge
-    var request = new HttpRequestMessage(HttpMethod.Post, "merged-pdf");
+    using var request = new HttpRequestMessage(HttpMethod.Post, "merged-pdf");
 
     request.Headers.TryAddWithoutValidation("Api-Key", apiKey);
     request.Headers.Accept.Add(new("application/json"));
diff --git a/DotNET/Complex Flow Examples/pdfa-3b-with-attachment.cs b/DotNET/Complex Flow Examples/pdfa-3b-with-attachment.cs
index 88e25b9..644bb61 100644
--- a/DotNET/Complex Flow Examples/pdfa-3b-with-attachment.cs	
+++ b/DotNET/Complex Flow Examples/pdfa-3b-with-attachment.cs	
@@ -16,7 +16,7 @@
 using (var httpClient = new HttpClient { BaseAddress = new Uri("https://api.pdfrest.com") })
 {
     // Begin file attachment
-    var attachRequest = new HttpRequestMessage(HttpMethod.Post, "pdf-with-added-attachment");
+    using var attachRequest = new HttpRequestMessage(HttpMethod.Post, "pdf-with-added-attachment");
 
     attachRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
     attachRequest.Headers.Accept.Add(new("application/json"));
@@ -43,7 +43,7 @@
     string attachementID = responseData.outputId;
 
     // Begin PDF/A conversion
-    var pdfaRequest = new HttpRequestMessage(HttpMethod.Post, "pdfa");
+    using var pdfaRequest = new HttpRequestMessage(HttpMethod.Post, "pdfa");
 
     pdfaRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
     pdfaRequest.Headers.Accept.Add(new("application/json"));
diff --git a/DotNET/Complex Flow Examples/preserve-word-document.cs b/DotNET/Complex Flow Examples/preserve-word-document.cs
index ef97823..e4f1de4 100644
--- a/DotNET/Complex Flow Examples/preserve-word-document.cs	
+++ b/DotNET/Complex Flow Examples/preserve-word-document.cs	
@@ -14,7 +14,7 @@
 {
 
     // Begin PDF conversion
-    var pdfRequest = new HttpRequestMessage(HttpMethod.Post, "pdf");
+    using var pdfRequest = new HttpRequestMessage(HttpMethod.Post, "pdf");
 
     pdfRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
     pdfRequest.Headers.Accept.Add(new("application/json"));
@@ -36,7 +36,7 @@
     string pdfID = responseData.outputId;
 
     // Begin PDF/A conversion
-    var pdfaRequest = new HttpRequestMessage(HttpMethod.Post, "pdfa");
+    using var pdfaRequest = new HttpRequestMessage(HttpMethod.Post, "pdfa");
 
     pdfaRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
     pdfaRequest.Headers.Accept.Add(new("application/json"));
diff --git a/DotNET/Complex Flow Examples/protected-watermark.cs b/DotNET/Complex Flow Examples/protected-watermark.cs
index d6ea3af..52fc1fd 100644
--- a/DotNET/Complex Flow Examples/protected-watermark.cs	
+++ b/DotNET/Complex Flow Examples/protected-watermark.cs	
@@ -14,7 +14,7 @@
 using (var httpClient = new HttpClient { BaseAddress = new Uri("https://api.pdfrest.com") })
 {
     // Begin watermarking
-    var watermarkRequest = new HttpRequestMessage(HttpMethod.Post, "watermarked-pdf");
+    using var watermarkRequest = new HttpRequestMessage(HttpMethod.Post, "watermarked-pdf");
 
     watermarkRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
     watermarkRequest.Headers.Accept.Add(new("application/json"));
@@ -39,7 +39,7 @@
     string watermarkID = watermarkResponseData.outputId;
 
     // Begin restricting
-    var restrictRequest = new HttpRequestMessage(HttpMethod.Post, "restricted-pdf");
+    using var restrictRequest = new HttpRequestMessage(HttpMethod.Post, "restricted-pdf");
 
     restrictRequest.Headers.TryAddWithoutValidation("Api-Key", apiKey);
     restrictRequest.Headers.Accept.Add(new("application/json"));