diff --git a/src/WireMock.Net/Matchers/RegexMatcher.cs b/src/WireMock.Net/Matchers/RegexMatcher.cs
index f4f5dc74..8ee94cae 100644
--- a/src/WireMock.Net/Matchers/RegexMatcher.cs
+++ b/src/WireMock.Net/Matchers/RegexMatcher.cs
@@ -18,7 +18,7 @@ namespace WireMock.Matchers
     public class RegexMatcher : IStringMatcher, IIgnoreCaseMatcher
     {
         private readonly AnyOf<string, StringPattern>[] _patterns;
-        private readonly RegexExtended[] _expressions;
+        private readonly Regex[] _expressions;
 
         /// <inheritdoc cref="IMatcher.MatchBehaviour"/>
         public MatchBehaviour MatchBehaviour { get; }
@@ -31,7 +31,10 @@ namespace WireMock.Matchers
         /// </summary>
         /// <param name="pattern">The pattern.</param>
         /// <param name="ignoreCase">Ignore the case from the pattern.</param>
-        public RegexMatcher([NotNull, RegexPattern] AnyOf<string, StringPattern> pattern, bool ignoreCase = false) : this(new[] { pattern }, ignoreCase)
+        /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
+        /// <param name="useRegexExtended">Use RegexExtended (default = true).</param>
+        public RegexMatcher([NotNull, RegexPattern] AnyOf<string, StringPattern> pattern, bool ignoreCase = false, bool throwException = false, bool useRegexExtended = true) :
+            this(MatchBehaviour.AcceptOnMatch, new[] { pattern }, ignoreCase, throwException, useRegexExtended)
         {
         }
 
@@ -41,16 +44,10 @@ namespace WireMock.Matchers
         /// <param name="matchBehaviour">The match behaviour.</param>
         /// <param name="pattern">The pattern.</param>
         /// <param name="ignoreCase">Ignore the case from the pattern.</param>
-        public RegexMatcher(MatchBehaviour matchBehaviour, [NotNull, RegexPattern] AnyOf<string, StringPattern> pattern, bool ignoreCase = false) : this(matchBehaviour, new[] { pattern }, ignoreCase)
-        {
-        }
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="RegexMatcher"/> class.
-        /// </summary>
-        /// <param name="patterns">The patterns.</param>
-        /// <param name="ignoreCase">Ignore the case from the pattern.</param>
-        public RegexMatcher([NotNull, RegexPattern] AnyOf<string, StringPattern>[] patterns, bool ignoreCase = false) : this(MatchBehaviour.AcceptOnMatch, patterns, ignoreCase)
+        /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
+        /// <param name="useRegexExtended">Use RegexExtended (default = true).</param>
+        public RegexMatcher(MatchBehaviour matchBehaviour, [NotNull, RegexPattern] AnyOf<string, StringPattern> pattern, bool ignoreCase = false, bool throwException = false, bool useRegexExtended = true) :
+            this(matchBehaviour, new[] { pattern }, ignoreCase, throwException, useRegexExtended)
         {
         }
 
@@ -61,7 +58,8 @@ namespace WireMock.Matchers
         /// <param name="patterns">The patterns.</param>
         /// <param name="ignoreCase">Ignore the case from the pattern.</param>
         /// <param name="throwException">Throw an exception when the internal matching fails because of invalid input.</param>
-        public RegexMatcher(MatchBehaviour matchBehaviour, [NotNull, RegexPattern] AnyOf<string, StringPattern>[] patterns, bool ignoreCase = false, bool throwException = false)
+        /// <param name="useRegexExtended">Use RegexExtended (default = true).</param>
+        public RegexMatcher(MatchBehaviour matchBehaviour, [NotNull, RegexPattern] AnyOf<string, StringPattern>[] patterns, bool ignoreCase = false, bool throwException = false, bool useRegexExtended = true)
         {
             Check.NotNull(patterns, nameof(patterns));
 
@@ -77,7 +75,7 @@ namespace WireMock.Matchers
                 options |= RegexOptions.IgnoreCase;
             }
 
-            _expressions = patterns.Select(p => new RegexExtended(p.GetPattern(), options)).ToArray();
+            _expressions = patterns.Select(p => useRegexExtended ? new RegexExtended(p.GetPattern(), options) : new Regex(p.GetPattern(), options)).ToArray();
         }
 
         /// <inheritdoc cref="IStringMatcher.IsMatch"/>
diff --git a/src/WireMock.Net/RegularExpressions/RegexExtended.cs b/src/WireMock.Net/RegularExpressions/RegexExtended.cs
index 661459d3..887a4a7c 100644
--- a/src/WireMock.Net/RegularExpressions/RegexExtended.cs
+++ b/src/WireMock.Net/RegularExpressions/RegexExtended.cs
@@ -16,16 +16,13 @@ namespace WireMock.RegularExpressions
         }
 
         /// <inheritdoc cref="Regex"/>
-        public RegexExtended(string pattern,
-                         RegexOptions options)
+        public RegexExtended(string pattern, RegexOptions options)
           : this(pattern, options, Regex.InfiniteMatchTimeout)
         {
         }
 
         /// <inheritdoc cref="Regex"/>
-        public RegexExtended(string pattern,
-                         RegexOptions options,
-                         TimeSpan matchTimeout)
+        public RegexExtended(string pattern, RegexOptions options, TimeSpan matchTimeout)
           : base(ReplaceGuidPattern(pattern), options, matchTimeout)
         {
         }
@@ -35,22 +32,31 @@ namespace WireMock.RegularExpressions
         {
             // Lower case format `B` Guid pattern
             { @"\guidb", @"(\{[a-z0-9]{8}-([a-z0-9]{4}-){3}[a-z0-9]{12}\})" },
+
             // Upper case format `B` Guid pattern
             { @"\GUIDB", @"(\{[A-Z0-9]{8}-([A-Z0-9]{4}-){3}[A-Z0-9]{12}\})" },
+
             // Lower case format `D` Guid pattern
             { @"\guidd", "([a-z0-9]{8}-([a-z0-9]{4}-){3}[a-z0-9]{12})" },
+
             // Upper case format `D` Guid pattern
             { @"\GUIDD", "([A-Z0-9]{8}-([A-Z0-9]{4}-){3}[A-Z0-9]{12})" },
+
             // Lower case format `N` Guid pattern
             { @"\guidn", "([a-z0-9]{32})" },
+
             // Upper case format `N` Guid pattern
             { @"\GUIDN", "([A-Z0-9]{32})" },
+
             // Lower case format `P` Guid pattern
             { @"\guidp", @"(\([a-z0-9]{8}-([a-z0-9]{4}-){3}[a-z0-9]{12}\))" },
+
             // Upper case format `P` Guid pattern
             { @"\GUIDP", @"(\([A-Z0-9]{8}-([A-Z0-9]{4}-){3}[A-Z0-9]{12}\))" },
+
             // Lower case format `X` Guid pattern
             { @"\guidx", @"(\{0x[a-f0-9]{8},0x[a-f0-9]{4},0x[a-f0-9]{4},\{(0x[a-f0-9]{2},){7}(0x[a-f0-9]{2})\}\})" },
+
             // Upper case format `X` Guid pattern
             { @"\GUIDX", @"(\{0x[A-F0-9]{8},0x[A-F0-9]{4},0x[A-F0-9]{4},\{(0x[A-F0-9]{2},){7}(0x[A-F0-9]{2})\}\})" },
         };
@@ -62,11 +68,13 @@ namespace WireMock.RegularExpressions
         private static string ReplaceGuidPattern(string pattern)
         {
             Check.NotNull(pattern, nameof(pattern));
+
             foreach (var tokenPattern in GuidTokenPatterns)
             {
                 pattern = pattern.Replace(tokenPattern.Key, tokenPattern.Value);
             }
+
             return pattern;
         }
     }
-}
+}
\ No newline at end of file
diff --git a/src/WireMock.Net/Serialization/MatcherMapper.cs b/src/WireMock.Net/Serialization/MatcherMapper.cs
index 027d5684..a92daaa8 100644
--- a/src/WireMock.Net/Serialization/MatcherMapper.cs
+++ b/src/WireMock.Net/Serialization/MatcherMapper.cs
@@ -41,6 +41,7 @@ namespace WireMock.Serialization
             var matchBehaviour = matcher.RejectOnMatch == true ? MatchBehaviour.RejectOnMatch : MatchBehaviour.AcceptOnMatch;
             bool ignoreCase = matcher.IgnoreCase == true;
             bool throwExceptionWhenMatcherFails = _settings.ThrowExceptionWhenMatcherFails == true;
+            bool useRegexExtended = _settings.UseRegexExtended == true;
 
             switch (matcherName)
             {
@@ -65,7 +66,7 @@ namespace WireMock.Serialization
                     return CreateExactObjectMatcher(matchBehaviour, stringPatterns[0], throwExceptionWhenMatcherFails);
 
                 case nameof(RegexMatcher):
-                    return new RegexMatcher(matchBehaviour, stringPatterns, ignoreCase, throwExceptionWhenMatcherFails);
+                    return new RegexMatcher(matchBehaviour, stringPatterns, ignoreCase, throwExceptionWhenMatcherFails, useRegexExtended);
 
                 case nameof(JsonMatcher):
                     object valueForJsonMatcher = matcher.Pattern ?? matcher.Patterns;
diff --git a/src/WireMock.Net/Server/WireMockServer.AdminFiles.cs b/src/WireMock.Net/Server/WireMockServer.AdminFiles.cs
index fb0548aa..e9db1a4a 100644
--- a/src/WireMock.Net/Server/WireMockServer.AdminFiles.cs
+++ b/src/WireMock.Net/Server/WireMockServer.AdminFiles.cs
@@ -1,4 +1,4 @@
-using System.IO;
+using System.IO;
 using System.Linq;
 using System.Text;
 using WireMock.Matchers;
@@ -9,7 +9,7 @@ namespace WireMock.Server
 {
     public partial class WireMockServer
     {
-        private readonly RegexMatcher _adminFilesFilenamePathMatcher = new RegexMatcher(MatchBehaviour.AcceptOnMatch, @"^\/__admin\/files\/.*$");
+        private readonly RegexMatcher _adminFilesFilenamePathMatcher = new RegexMatcher(@"^\/__admin\/files\/.*$");
         private static readonly Encoding[] FileBodyIsString = { Encoding.UTF8, Encoding.ASCII };
 
         #region Files/{filename}
diff --git a/src/WireMock.Net/Settings/IWireMockServerSettings.cs b/src/WireMock.Net/Settings/IWireMockServerSettings.cs
index ea3060ca..b5a93ea3 100644
--- a/src/WireMock.Net/Settings/IWireMockServerSettings.cs
+++ b/src/WireMock.Net/Settings/IWireMockServerSettings.cs
@@ -1,9 +1,11 @@
 using System;
+using System.Text.RegularExpressions;
 using HandlebarsDotNet;
 using JetBrains.Annotations;
 using WireMock.Handlers;
 using WireMock.Logging;
 using WireMock.Matchers;
+using WireMock.RegularExpressions;
 #if USE_ASPNETCORE
 using Microsoft.Extensions.DependencyInjection;
 #endif
@@ -215,5 +217,11 @@ namespace WireMock.Settings
         /// </summary>
         [PublicAPI]
         IWebhookSettings WebhookSettings { get; set; }
+
+        /// <summary>
+        /// Use the <see cref="RegexExtended"/> instead of the default <see cref="Regex"/>.
+        /// </summary>
+        [PublicAPI]
+        bool? UseRegexExtended { get; }
     }
 }
\ No newline at end of file
diff --git a/src/WireMock.Net/Settings/WireMockServerSettings.cs b/src/WireMock.Net/Settings/WireMockServerSettings.cs
index 8f963073..eb345bc4 100644
--- a/src/WireMock.Net/Settings/WireMockServerSettings.cs
+++ b/src/WireMock.Net/Settings/WireMockServerSettings.cs
@@ -151,5 +151,9 @@ namespace WireMock.Settings
         /// <inheritdoc cref="IWireMockServerSettings.WebhookSettings"/>
         [PublicAPI]
         public IWebhookSettings WebhookSettings { get; set; }
+
+        /// <inheritdoc cref="IWireMockServerSettings.UseRegexExtended"/>
+        [PublicAPI]
+        public bool? UseRegexExtended { get; set; } = true;
     }
 }
\ No newline at end of file
diff --git a/test/WireMock.Net.Tests/Matchers/RegexMatcherTests.cs b/test/WireMock.Net.Tests/Matchers/RegexMatcherTests.cs
index 5271ccd4..f39fea64 100644
--- a/test/WireMock.Net.Tests/Matchers/RegexMatcherTests.cs
+++ b/test/WireMock.Net.Tests/Matchers/RegexMatcherTests.cs
@@ -1,3 +1,5 @@
+using System;
+using FluentAssertions;
 using NFluent;
 using WireMock.Matchers;
 using Xunit;
@@ -70,6 +72,32 @@ namespace WireMock.Net.Tests.Matchers
             Check.That(result).IsEqualTo(0.0d);
         }
 
+        [Fact]
+        public void RegexMatcher_IsMatch_RegexExtended_Guid()
+        {
+            // Assign
+            var matcher = new RegexMatcher(@"\GUIDB", true);
+
+            // Act
+            double result = matcher.IsMatch(Guid.NewGuid().ToString("B"));
+
+            // Assert
+            result.Should().Be(1.0);
+        }
+
+        [Fact]
+        public void RegexMatcher_IsMatch_Regex_Guid()
+        {
+            // Assign
+            var matcher = new RegexMatcher(@"\GUIDB", true, false, false);
+
+            // Act
+            double result = matcher.IsMatch(Guid.NewGuid().ToString("B"));
+
+            // Assert
+            result.Should().Be(0);
+        }
+
         [Fact]
         public void RegexMatcher_IsMatch_IgnoreCase()
         {
diff --git a/test/WireMock.Net.Tests/RegularExpressions/RegexExtendedTests.cs b/test/WireMock.Net.Tests/RegularExpressions/RegexExtendedTests.cs
index 8f6b7a98..fdeca434 100644
--- a/test/WireMock.Net.Tests/RegularExpressions/RegexExtendedTests.cs
+++ b/test/WireMock.Net.Tests/RegularExpressions/RegexExtendedTests.cs
@@ -10,7 +10,7 @@ namespace WireMock.Net.Tests.RegularExpressions
         /// <summary>
         /// Input guid used for testing
         /// </summary>
-        public Guid InputGuid { get; } = Guid.NewGuid();
+        public Guid InputGuid => Guid.NewGuid();
 
         [Fact]
         public void RegexExtended_GuidB_Pattern()