diff --git a/src/NuGet.Core/NuGet.Configuration/Utility/SettingsUtility.cs b/src/NuGet.Core/NuGet.Configuration/Utility/SettingsUtility.cs
index a94bc096b3e..8540dfdc4a8 100644
--- a/src/NuGet.Core/NuGet.Configuration/Utility/SettingsUtility.cs
+++ b/src/NuGet.Core/NuGet.Configuration/Utility/SettingsUtility.cs
@@ -55,6 +55,7 @@ public static bool DeleteValue(ISettings settings, string section, string attrib
             if (element != null)
             {
                 settings.Remove(section, element);
+                settings.SaveToDisk();
 
                 return true;
             }
diff --git a/test/NuGet.Core.Tests/NuGet.Configuration.Test/SettingsUtilityTests.cs b/test/NuGet.Core.Tests/NuGet.Configuration.Test/SettingsUtilityTests.cs
index 0a053cdee45..860b08b3f04 100644
--- a/test/NuGet.Core.Tests/NuGet.Configuration.Test/SettingsUtilityTests.cs
+++ b/test/NuGet.Core.Tests/NuGet.Configuration.Test/SettingsUtilityTests.cs
@@ -254,6 +254,33 @@ public void DeleteConfigValue_WithNullSettings_Throws()
             ex.Should().BeOfType<ArgumentNullException>();
         }
 
+        [Fact]
+        public void DeleteConfigValue_WithValidSettings_DeletesKey()
+        {
+            // Arrange
+            var keyName = "dependencyVersion";
+            var nugetConfigPath = "NuGet.Config";
+            var config = @"<?xml version=""1.0"" encoding=""utf-8""?>
+<configuration>
+  <config>
+    <add key=""" + keyName + @""" value=""Highest"" />
+  </config>
+</configuration>";
+
+            using (var mockBaseDirectory = TestDirectory.Create())
+            {
+                SettingsTestUtils.CreateConfigurationFile(nugetConfigPath, mockBaseDirectory, config);
+                var settings = new Settings(mockBaseDirectory);
+
+                // Act
+                SettingsUtility.DeleteConfigValue(settings, keyName);
+
+                // Assert
+                var content = File.ReadAllText(Path.Combine(mockBaseDirectory, nugetConfigPath));
+                content.Should().NotContain(keyName);
+            }
+        }
+
         [Fact]
         public void GetGlobalPackagesFolder_WithNullSettings_Throws()
         {