diff --git a/src/SemanticVersioning/Version.cs b/src/SemanticVersioning/Version.cs
index ec6bd38..d2e14b8 100644
--- a/src/SemanticVersioning/Version.cs
+++ b/src/SemanticVersioning/Version.cs
@@ -48,7 +48,6 @@ public class Version : IComparable<Version>, IComparable, IEquatable<Version>
         public bool IsPreRelease { get { return !string.IsNullOrEmpty(_preRelease); } }
 
         private static Regex strictRegex = new Regex(@"^
-            \s*
             ([0-9]|[1-9][0-9]+)       # major version
             \.
             ([0-9]|[1-9][0-9]+)       # minor version
@@ -56,7 +55,6 @@ public class Version : IComparable<Version>, IComparable, IEquatable<Version>
             ([0-9]|[1-9][0-9]+)       # patch version
             (\-([0-9A-Za-z\-\.]+))?   # pre-release version
             (\+([0-9A-Za-z\-\.]+))?   # build metadata
-            \s*
             $",
             RegexOptions.IgnorePatternWhitespace);
 
diff --git a/test/SemanticVersioning.Tests/ParseMajorMinorPatch.cs b/test/SemanticVersioning.Tests/ParseMajorMinorPatch.cs
index 0a209e7..77cee4b 100644
--- a/test/SemanticVersioning.Tests/ParseMajorMinorPatch.cs
+++ b/test/SemanticVersioning.Tests/ParseMajorMinorPatch.cs
@@ -7,10 +7,9 @@ public class ParseMajorMinorPatch
     {
         [Theory]
         [InlineData("1.2.3", 1, false)]
-        [InlineData(" 1.2.3 ", 1, false)]
-        [InlineData(" 2.2.3-4 ", 2, false)]
-        [InlineData(" 3.2.3-pre ", 3, false)]
-        [InlineData("\t13.2.3", 13, false)]
+        [InlineData("2.2.3-4", 2, false)]
+        [InlineData("3.2.3-pre", 3, false)]
+        [InlineData("\t13.2.3", 13, true)]
         [InlineData(" v8.2.3 ", 8, true)]
         [InlineData("v5.2.3", 5, true)]
         [InlineData("=21.2.3", 21, true)]
@@ -23,10 +22,9 @@ public void ParseMajorVersion(string versionString, int majorVersion, bool loose
 
         [Theory]
         [InlineData("1.2.3", 2, false)]
-        [InlineData(" 1.2.3 ", 2, false)]
-        [InlineData(" 2.2.3-4 ", 2, false)]
-        [InlineData(" 3.2.3-pre ", 2, false)]
-        [InlineData("\t13.2.3", 2, false)]
+        [InlineData("2.2.3-4", 2, false)]
+        [InlineData("3.2.3-pre", 2, false)]
+        [InlineData("\t13.2.3", 2, true)]
         [InlineData(" v8.2.3 ", 2, true)]
         [InlineData("v5.2.3", 2, true)]
         [InlineData("=21.2.3", 2, true)]
@@ -39,10 +37,9 @@ public void ParseMinorVersion(string versionString, int minorVersion, bool loose
 
         [Theory]
         [InlineData("1.2.3", 3, false)]
-        [InlineData(" 1.2.3 ", 3, false)]
-        [InlineData(" 2.2.3-4 ", 3, false)]
-        [InlineData(" 3.2.3-pre ", 3, false)]
-        [InlineData("\t13.2.3", 3, false)]
+        [InlineData("2.2.3-4", 3, false)]
+        [InlineData("3.2.3-pre", 3, false)]
+        [InlineData("13.2.3", 3, false)]
         [InlineData(" v8.2.3 ", 3, true)]
         [InlineData("v5.2.3", 3, true)]
         [InlineData("=21.2.3", 3, true)]
diff --git a/test/SemanticVersioning.Tests/VersionComparison.cs b/test/SemanticVersioning.Tests/VersionComparison.cs
index 7744c11..5f1a4a9 100644
--- a/test/SemanticVersioning.Tests/VersionComparison.cs
+++ b/test/SemanticVersioning.Tests/VersionComparison.cs
@@ -189,7 +189,6 @@ public void Comparisons(string v0s, string v1s)
         [InlineData("1.2.3", "=1.2.3", true)]
         [InlineData("1.2.3", " 1.2.3", true)]
         [InlineData("1.2.3", "= 1.2.3", true)]
-        [InlineData("1.2.3", " 1.2.3", false)]
         [InlineData("1.2.3", " =1.2.3", true)]
         [InlineData("1.2.3", " v 1.2.3", true)]
         [InlineData("1.2.3", " = 1.2.3", true)]
@@ -197,7 +196,6 @@ public void Comparisons(string v0s, string v1s)
         [InlineData("1.2.3-0", "=1.2.3-0", true)]
         [InlineData("1.2.3-0", " 1.2.3-0", true)]
         [InlineData("1.2.3-0", "= 1.2.3-0", true)]
-        [InlineData("1.2.3-0", " 1.2.3-0", false)]
         [InlineData("1.2.3-0", " =1.2.3-0", true)]
         [InlineData("1.2.3-0", " v 1.2.3-0", true)]
         [InlineData("1.2.3-0", " = 1.2.3-0", true)]
@@ -205,7 +203,6 @@ public void Comparisons(string v0s, string v1s)
         [InlineData("1.2.3-1", "=1.2.3-1", true)]
         [InlineData("1.2.3-1", " 1.2.3-1", true)]
         [InlineData("1.2.3-1", "= 1.2.3-1", true)]
-        [InlineData("1.2.3-1", " 1.2.3-1", false)]
         [InlineData("1.2.3-1", " =1.2.3-1", true)]
         [InlineData("1.2.3-1", " v 1.2.3-1", true)]
         [InlineData("1.2.3-1", " = 1.2.3-1", true)]
@@ -213,7 +210,6 @@ public void Comparisons(string v0s, string v1s)
         [InlineData("1.2.3-beta", "=1.2.3-beta", true)]
         [InlineData("1.2.3-beta", " 1.2.3-beta", true)]
         [InlineData("1.2.3-beta", "= 1.2.3-beta", true)]
-        [InlineData("1.2.3-beta", " 1.2.3-beta", false)]
         [InlineData("1.2.3-beta", " =1.2.3-beta", true)]
         [InlineData("1.2.3-beta", " v 1.2.3-beta", true)]
         [InlineData("1.2.3-beta", " = 1.2.3-beta", true)]
@@ -221,7 +217,6 @@ public void Comparisons(string v0s, string v1s)
         [InlineData("1.2.3+build", " = 1.2.3+otherbuild", true)]
         [InlineData("1.2.3-beta+build", "1.2.3-beta+otherbuild", false)]
         [InlineData("1.2.3+build", "1.2.3+otherbuild", false)]
-        [InlineData(" 1.2.3+build", "1.2.3+otherbuild", false)]
         public void Equality(string v0s, string v1s, bool loose)
         {
             var v0 = new Version(v0s, false);