diff --git a/src/DemaConsulting.TestResults/IO/JUnitSerializer.cs b/src/DemaConsulting.TestResults/IO/JUnitSerializer.cs
index 99ddfe9..e64356a 100644
--- a/src/DemaConsulting.TestResults/IO/JUnitSerializer.cs
+++ b/src/DemaConsulting.TestResults/IO/JUnitSerializer.cs
@@ -66,11 +66,7 @@ public static string Serialize(TestResults results)
             new XAttribute("name", results.Name));
 
         // Add test suites for each class
-        foreach (var suiteGroup in testSuites)
-        {
-            var testSuite = CreateTestSuiteElement(suiteGroup);
-            root.Add(testSuite);
-        }
+        root.Add(testSuites.Select(CreateTestSuiteElement));
 
         // Write the XML text
         var doc = new XDocument(root);
@@ -98,11 +94,7 @@ private static XElement CreateTestSuiteElement(IGrouping<string, TestResult> sui
             new XAttribute("time", suiteTests.Sum(t => t.Duration.TotalSeconds).ToString(TimeFormatString, CultureInfo.InvariantCulture)));
 
         // Add test cases
-        foreach (var test in suiteTests)
-        {
-            var testCase = CreateTestCaseElement(test);
-            testSuite.Add(testCase);
-        }
+        testSuite.Add(suiteTests.Select(CreateTestCaseElement));
 
         return testSuite;
     }
@@ -239,12 +231,7 @@ public static TestResults Deserialize(string junitContents)
     private static void ParseTestSuite(XElement testSuiteElement, TestResults results)
     {
         var testCaseElements = testSuiteElement.Elements("testcase");
-
-        foreach (var testCaseElement in testCaseElements)
-        {
-            var testResult = ParseTestCase(testCaseElement);
-            results.Results.Add(testResult);
-        }
+        results.Results.AddRange(testCaseElements.Select(ParseTestCase));
     }
 
     /// <summary>
diff --git a/src/DemaConsulting.TestResults/IO/TrxSerializer.cs b/src/DemaConsulting.TestResults/IO/TrxSerializer.cs
index 6c232bd..67209e0 100644
--- a/src/DemaConsulting.TestResults/IO/TrxSerializer.cs
+++ b/src/DemaConsulting.TestResults/IO/TrxSerializer.cs
@@ -127,13 +127,7 @@ private static XElement CreateRootElement(TestResults results)
     private static XElement CreateResultsElement(List<TestResult> testResults)
     {
         var resultsElement = new XElement(TrxNamespace + "Results");
-
-        foreach (var test in testResults)
-        {
-            var resultElement = CreateUnitTestResultElement(test);
-            resultsElement.Add(resultElement);
-        }
-
+        resultsElement.Add(testResults.Select(CreateUnitTestResultElement));
         return resultsElement;
     }
 
@@ -352,11 +346,7 @@ private static void ParseTestResults(XDocument doc, XmlNamespaceManager nsMgr, T
             "/trx:TestRun/trx:Results/trx:UnitTestResult",
             nsMgr);
 
-        foreach (var resultElement in resultElements)
-        {
-            var testResult = ParseTestResult(doc, nsMgr, resultElement);
-            results.Results.Add(testResult);
-        }
+        results.Results.AddRange(resultElements.Select(e => ParseTestResult(doc, nsMgr, e)));
     }
 
     /// <summary>