Index: tests/test_runner/test_runner.vcxproj
===================================================================
diff -u -N -r1a76ef9619bc4e5dd4cc9b98f4e941bf274bb22b -r318ace3ec2b5cf68de6aeb5a04b56c4389565e5a
--- tests/test_runner/test_runner.vcxproj	(.../test_runner.vcxproj)	(revision 1a76ef9619bc4e5dd4cc9b98f4e941bf274bb22b)
+++ tests/test_runner/test_runner.vcxproj	(.../test_runner.vcxproj)	(revision 318ace3ec2b5cf68de6aeb5a04b56c4389565e5a)
@@ -185,6 +185,7 @@
       <PrecompiledHeader>Use</PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+      <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -205,6 +206,7 @@
       <PrecompiledHeader>Use</PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+      <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -223,6 +225,7 @@
       <PrecompiledHeader>Use</PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+      <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -246,6 +249,7 @@
       <PrecompiledHeader>Use</PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+      <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>