diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs
index 95e2791fc..a669a3123 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/Common/WebRequestPSCmdlet.Common.cs
@@ -1674,7 +1674,7 @@ namespace Microsoft.PowerShell.Commands
                 // would be used if Charset is not supplied in the Content-Type property.
                 try
                 {
-                    var mediaTypeHeaderValue = new MediaTypeHeaderValue(ContentType);
+                    var mediaTypeHeaderValue = MediaTypeHeaderValue.Parse(ContentType);
                     if (!string.IsNullOrEmpty(mediaTypeHeaderValue.CharSet))
                     {
                         encoding = Encoding.GetEncoding(mediaTypeHeaderValue.CharSet);
diff --git a/test/powershell/Modules/Microsoft.PowerShell.Utility/WebCmdlets.Tests.ps1 b/test/powershell/Modules/Microsoft.PowerShell.Utility/WebCmdlets.Tests.ps1
index da97cc4d8..9f69785cd 100644
--- a/test/powershell/Modules/Microsoft.PowerShell.Utility/WebCmdlets.Tests.ps1
+++ b/test/powershell/Modules/Microsoft.PowerShell.Utility/WebCmdlets.Tests.ps1
@@ -482,6 +482,19 @@ Describe "Invoke-WebRequest tests" -Tags "Feature", "RequireAdminOnWindows" {
         $Result.Output.Content | Should -Match '⡌⠁⠧⠑ ⠼⠁⠒  ⡍⠜⠇⠑⠹⠰⠎ ⡣⠕⠌'
     }
 
+    It "Invoke-WebRequest supports sending request as UTF-8." {
+        $uri = Get-WebListenerUrl -Test 'POST'
+        # Body must contain non-ASCII characters
+        $command = "Invoke-WebRequest -Uri '$uri' -Body 'проверка' -ContentType 'application/json; charset=utf-8' -Method 'POST'"
+
+        $result = ExecuteWebCommand -command $command
+        ValidateResponse -response $result
+
+        $Result.Output.Encoding.BodyName | Should -BeExactly 'utf-8'
+        $object = $Result.Output.Content | ConvertFrom-Json
+        $object.Data | Should -BeExactly 'проверка'
+    }
+
     It "Invoke-WebRequest supports request that returns page containing CodPage 936 data." {
         $uri = Get-WebListenerUrl -Test 'Encoding' -TestValue 'CP936'
         $command = "Invoke-WebRequest -Uri '$uri'"
@@ -1902,6 +1915,15 @@ Describe "Invoke-RestMethod tests" -Tags "Feature", "RequireAdminOnWindows" {
         $Result.Output | Should -Match '⡌⠁⠧⠑ ⠼⠁⠒  ⡍⠜⠇⠑⠹⠰⠎ ⡣⠕⠌'
     }
 
+    It "Invoke-RestMethod supports sending requests as UTF8" {
+        $uri = Get-WebListenerUrl -Test POST
+        # Body must contain non-ASCII characters
+        $command = "Invoke-RestMethod -Uri '$uri' -body 'проверка' -ContentType 'application/json; charset=utf-8' -method 'POST'"
+
+        $result = ExecuteWebCommand -command $command
+        $Result.Output.Data | Should -BeExactly 'проверка'
+    }
+
     It "Invoke-RestMethod supports request that returns page containing Code Page 936 data." {
         $uri = Get-WebListenerUrl -Test 'Encoding' -TestValue 'CP936'
         $command = "Invoke-RestMethod -Uri '$uri'"