diff --git a/src/BirdsiteLive.Domain/Tools/StatusExtractor.cs b/src/BirdsiteLive.Domain/Tools/StatusExtractor.cs
index 9ba889c..134fc3f 100644
--- a/src/BirdsiteLive.Domain/Tools/StatusExtractor.cs
+++ b/src/BirdsiteLive.Domain/Tools/StatusExtractor.cs
@@ -12,8 +12,8 @@ namespace BirdsiteLive.Domain.Tools
 
     public class StatusExtractor : IStatusExtractor
     {
-        private readonly Regex _hastagRegex = new Regex(@"\W(\#[a-zA-Z0-9_]+\b)(?!;)");
-        private readonly Regex _mentionRegex = new Regex(@"\W(\@[a-zA-Z0-9_]+\b)(?!;)");
+        private readonly Regex _hastagRegex = new Regex(@"\W(\#[a-zA-Z0-9_ー]+\b)(?!;)");
+        private readonly Regex _mentionRegex = new Regex(@"\W(\@[a-zA-Z0-9_ー]+\b)(?!;)");
         private readonly InstanceSettings _instanceSettings;
 
         #region Ctor
diff --git a/src/Tests/BirdsiteLive.Domain.Tests/Tools/StatusExtractorTests.cs b/src/Tests/BirdsiteLive.Domain.Tests/Tools/StatusExtractorTests.cs
index e0ab5f7..865fa76 100644
--- a/src/Tests/BirdsiteLive.Domain.Tests/Tools/StatusExtractorTests.cs
+++ b/src/Tests/BirdsiteLive.Domain.Tests/Tools/StatusExtractorTests.cs
@@ -43,6 +43,27 @@ namespace BirdsiteLive.Domain.Tests.Tools
             #endregion
         }
 
+        [TestMethod]
+        public void Extract_SingleHashTag_SpecialChar_Test()
+        {
+            #region Stubs
+            var message = $"Bla!{Environment.NewLine}#COVIDー19⁠";
+            #endregion
+
+            var service = new StatusExtractor(_settings);
+            var result = service.ExtractTags(message);
+
+            #region Validations
+            Assert.AreEqual(1, result.tags.Length);
+            Assert.AreEqual("#COVIDー19", result.tags.First().name);
+            Assert.AreEqual("Hashtag", result.tags.First().type);
+            Assert.AreEqual("https://domain.name/tags/COVIDー19", result.tags.First().href);
+
+            Assert.IsTrue(result.content.Contains("Bla!"));
+            Assert.IsTrue(result.content.Contains(@"<a href=""https://domain.name/tags/COVIDー19"" class=""mention hashtag"" rel=""tag"">#<span>COVIDー19</span></a>"));
+            #endregion
+        }
+
         [TestMethod]
         public void Extract_MultiHashTags_Test()
         {