diff --git a/BuildToolsVersion.txt b/BuildToolsVersion.txt
index f48bdb83e5bc..7787a55393cc 100644
--- a/BuildToolsVersion.txt
+++ b/BuildToolsVersion.txt
@@ -1 +1 @@
-2.1.0-preview3-02620-05
+2.1.0-preview3-02620-10
diff --git a/dependencies.props b/dependencies.props
index a2870db6ff3e..1748b7fe490e 100644
--- a/dependencies.props
+++ b/dependencies.props
@@ -17,7 +17,7 @@
     <ProjectNTfsTestILCCurrentRef>75673f211690f5a9df7447e547e5b520bddfd33a</ProjectNTfsTestILCCurrentRef>
     <SniCurrentRef>8bd1ec5fac9f0eec34ff6b34b1d878b4359e02dd</SniCurrentRef>
     <StandardCurrentRef>6298244e25cf84d91e3cda9627315f2425274624</StandardCurrentRef>
-    <BuildToolsCurrentRef>2a49ae275b2058102069dd364357ebac013de944</BuildToolsCurrentRef>
+    <BuildToolsCurrentRef>91233f5f85ad8dc86ee7052672e19d6af3f02f79</BuildToolsCurrentRef>
   </PropertyGroup>
 
   <!-- Product dependency versions. -->
@@ -48,13 +48,13 @@
     <AppXRunnerVersion>1.0.3-prerelease-00921-01</AppXRunnerVersion>
     <XunitPerfAnalysisPackageVersion>1.0.0-beta-build0018</XunitPerfAnalysisPackageVersion>
     <TraceEventPackageVersion>2.0.5</TraceEventPackageVersion>
-    <XunitNetcoreExtensionsVersion>2.1.0-preview3-02620-05</XunitNetcoreExtensionsVersion>
+    <XunitNetcoreExtensionsVersion>2.1.0-preview3-02620-10</XunitNetcoreExtensionsVersion>
   </PropertyGroup>
 
   <!-- Package versions used as toolsets -->
   <PropertyGroup>
     <FeedTasksPackage>Microsoft.DotNet.Build.Tasks.Feed</FeedTasksPackage>
-    <FeedTasksPackageVersion>2.1.0-preview3-02620-05</FeedTasksPackageVersion>
+    <FeedTasksPackageVersion>2.1.0-preview3-02620-10</FeedTasksPackageVersion>
   </PropertyGroup>
 
   <!-- Publish symbol build task package -->
diff --git a/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Date.cs b/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Date.cs
index d69ff7ce136f..1ebedd865b8c 100644
--- a/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Date.cs
+++ b/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Date.cs
@@ -89,7 +89,7 @@ public static bool TryParse(ReadOnlySpan<byte> text, out DateTime value, out int
                         return true;
                     }
 
-                case (default):
+                case default(char):
                 case 'G':
                     return TryParseDateTimeG(text, out value, out _, out bytesConsumed);
 
@@ -132,7 +132,7 @@ public static bool TryParse(ReadOnlySpan<byte> text, out DateTimeOffset value, o
                 case 'O':
                     return TryParseDateTimeOffsetO(text, out value, out bytesConsumed, out _);
 
-                case (default):
+                case default(char):
                     return TryParseDateTimeOffsetDefault(text, out value, out bytesConsumed);
 
                 case 'G':
diff --git a/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Decimal.cs b/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Decimal.cs
index 59f74bb84738..5988012a1d01 100644
--- a/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Decimal.cs
+++ b/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Decimal.cs
@@ -31,7 +31,7 @@ public static bool TryParse(ReadOnlySpan<byte> text, out decimal value, out int
             ParseNumberOptions options;
             switch (standardFormat)
             {
-                case (default):
+                case default(char):
                 case 'G':
                 case 'g':
                 case 'E':
diff --git a/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Float.cs b/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Float.cs
index 0b0e25e22d24..5f6e77956fac 100644
--- a/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Float.cs
+++ b/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Float.cs
@@ -79,7 +79,7 @@ private static bool TryParseNormalAsFloatingPoint(ReadOnlySpan<byte> text, out d
             ParseNumberOptions options;
             switch (standardFormat)
             {
-                case (default):
+                case default(char):
                 case 'G':
                 case 'g':
                 case 'E':
diff --git a/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Guid.cs b/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Guid.cs
index baefe25905e7..f533467a0a8c 100644
--- a/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Guid.cs
+++ b/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Guid.cs
@@ -31,7 +31,7 @@ public static bool TryParse(ReadOnlySpan<byte> text, out Guid value, out int byt
         {
             switch (standardFormat)
             {
-                case (default):
+                case default(char):
                 case 'D':
                     return TryParseGuidCore(text, false, ' ', ' ', out value, out bytesConsumed);
                 case 'B':
diff --git a/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Integer.Signed.cs b/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Integer.Signed.cs
index e7f500968412..26c2455d84ec 100644
--- a/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Integer.Signed.cs
+++ b/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Integer.Signed.cs
@@ -41,7 +41,7 @@ public static bool TryParse(ReadOnlySpan<byte> text, out sbyte value, out int by
         {
             switch (standardFormat)
             {
-                case (default):
+                case default(char):
                 case 'g':
                 case 'G':
                 case 'd':
@@ -87,7 +87,7 @@ public static bool TryParse(ReadOnlySpan<byte> text, out short value, out int by
         {
             switch (standardFormat)
             {
-                case (default):
+                case default(char):
                 case 'g':
                 case 'G':
                 case 'd':
@@ -133,7 +133,7 @@ public static bool TryParse(ReadOnlySpan<byte> text, out int value, out int byte
         {
             switch (standardFormat)
             {
-                case (default):
+                case default(char):
                 case 'g':
                 case 'G':
                 case 'd':
@@ -179,7 +179,7 @@ public static bool TryParse(ReadOnlySpan<byte> text, out long value, out int byt
         {
             switch (standardFormat)
             {
-                case (default):
+                case default(char):
                 case 'g':
                 case 'G':
                 case 'd':
diff --git a/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Integer.Unsigned.cs b/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Integer.Unsigned.cs
index 78dfdebcd955..6158ee1288b3 100644
--- a/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Integer.Unsigned.cs
+++ b/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.Integer.Unsigned.cs
@@ -31,7 +31,7 @@ public static bool TryParse(ReadOnlySpan<byte> text, out byte value, out int byt
         {
             switch (standardFormat)
             {
-                case (default):
+                case default(char):
                 case 'g':
                 case 'G':
                 case 'd':
@@ -77,7 +77,7 @@ public static bool TryParse(ReadOnlySpan<byte> text, out ushort value, out int b
         {
             switch (standardFormat)
             {
-                case (default):
+                case default(char):
                 case 'g':
                 case 'G':
                 case 'd':
@@ -123,7 +123,7 @@ public static bool TryParse(ReadOnlySpan<byte> text, out uint value, out int byt
         {
             switch (standardFormat)
             {
-                case (default):
+                case default(char):
                 case 'g':
                 case 'G':
                 case 'd':
@@ -169,7 +169,7 @@ public static bool TryParse(ReadOnlySpan<byte> text, out ulong value, out int by
         {
             switch (standardFormat)
             {
-                case (default):
+                case default(char):
                 case 'g':
                 case 'G':
                 case 'd':
diff --git a/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.TimeSpan.cs b/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.TimeSpan.cs
index e971718fbb85..e8a47b87cc0b 100644
--- a/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.TimeSpan.cs
+++ b/src/System.Memory/src/System/Buffers/Text/Utf8Parser/Utf8Parser.TimeSpan.cs
@@ -32,7 +32,7 @@ public static bool TryParse(ReadOnlySpan<byte> text, out TimeSpan value, out int
         {
             switch (standardFormat)
             {
-                case (default):
+                case default(char):
                 case 'c':
                 case 't':
                 case 'T':