diff --git a/src/libraries/System.Text.RegularExpressions/src/System/Text/RegularExpressions/RegexParser.cs b/src/libraries/System.Text.RegularExpressions/src/System/Text/RegularExpressions/RegexParser.cs
index 7287e39125f1e1..edd7dfff101527 100644
--- a/src/libraries/System.Text.RegularExpressions/src/System/Text/RegularExpressions/RegexParser.cs
+++ b/src/libraries/System.Text.RegularExpressions/src/System/Text/RegularExpressions/RegexParser.cs
@@ -1929,7 +1929,7 @@ internal static int MapCaptureNumber(int capnum, Hashtable? caps) =>
         private static ReadOnlySpan<byte> Category =>
         [
             // 0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F  0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
-               0, 0, 0, 0, 0, 0, 0, 0, 0, W, W, 0, W, W, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+               0, 0, 0, 0, 0, 0, 0, 0, 0, W, W, W, W, W, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
             //    !  "  #  $  %  &  '  (  )  *  +  ,  -  .  /  0  1  2  3  4  5  6  7  8  9  :  ;  <  =  >  ?
                W, 0, 0, Z, S, 0, 0, 0, S, S, Q, Q, 0, 0, S, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Q,
             // @  A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  [  \  ]  ^  _
@@ -1939,7 +1939,7 @@ internal static int MapCaptureNumber(int capnum, Hashtable? caps) =>
         ];
 
         private static readonly SearchValues<char> s_metachars =
-            SearchValues.Create("\t\n\f\r #$()*+.?[\\^{|");
+            SearchValues.Create("\t\n\v\f\r #$()*+.?[\\^{|");
 
         /// <summary>Returns true for those characters that terminate a string of ordinary chars.</summary>
         private static bool IsSpecial(char ch) => ch <= '|' && Category[ch] >= S;
diff --git a/src/libraries/System.Text.RegularExpressions/tests/FunctionalTests/Regex.Match.Tests.cs b/src/libraries/System.Text.RegularExpressions/tests/FunctionalTests/Regex.Match.Tests.cs
index 01553e0659b850..13a7d4daaea6dc 100644
--- a/src/libraries/System.Text.RegularExpressions/tests/FunctionalTests/Regex.Match.Tests.cs
+++ b/src/libraries/System.Text.RegularExpressions/tests/FunctionalTests/Regex.Match.Tests.cs
@@ -581,6 +581,12 @@ public static IEnumerable<object[]> Match_MemberData()
             // "x" option. Removes unescaped whitespace from the pattern. : Actual - "\x20([^/]+)\x20","x"
             yield return ("\x20([^/]+)\x20\x20\x20\x20\x20\x20\x20", " abc       ", RegexOptions.IgnorePatternWhitespace, 0, 10, true, " abc      ");
 
+            // "x" option. Vertical tab should be ignored as whitespace
+            if (!PlatformDetection.IsNetFramework)
+            {
+                yield return ("a\vb", "ab", RegexOptions.IgnorePatternWhitespace, 0, 2, true, "ab");
+            }
+
             // Turning on case insensitive option in mid-pattern : Actual - "aaa(?i:match this)bbb"
             if ("i".ToUpper() == "I")
             {