diff --git a/dep/CLI11/cgmanifest.json b/dep/CLI11/cgmanifest.json
index 134a91b4c3f..c16d668d8ac 100644
--- a/dep/CLI11/cgmanifest.json
+++ b/dep/CLI11/cgmanifest.json
@@ -6,7 +6,7 @@
         "type": "git",
         "git": {
           "repositoryUrl": "https://github.com/CLIUtils/CLI11",
-          "commitHash": "dd0d8e4fe729e5b1110232c7a5c9566dad884686"
+          "commitHash": "5cb3efabce007c3a0230e4cc2e27da491c646b6c"
         }
       }
     }
diff --git a/scratch/ScratchIslandApp/SampleApp/SampleAppLib.vcxproj b/scratch/ScratchIslandApp/SampleApp/SampleAppLib.vcxproj
index 8a7e19e5624..609f7db6ab0 100644
--- a/scratch/ScratchIslandApp/SampleApp/SampleAppLib.vcxproj
+++ b/scratch/ScratchIslandApp/SampleApp/SampleAppLib.vcxproj
@@ -26,15 +26,6 @@
   <Import Project="$(OpenConsoleDir)src\common.nugetversions.props" />
   <Import Project="$(OpenConsoleDir)src\cppwinrt.build.pre.props" />
 
-  <ItemDefinitionGroup>
-
-    <ClCompile>
-      <!-- For CLI11: It uses dynamic_cast to cast types around, which depends
-      on being compiled with RTTI (/GR). -->
-      <RuntimeTypeInfo>true</RuntimeTypeInfo>
-    </ClCompile>
-  </ItemDefinitionGroup>
-
   <!-- ========================= XAML files ======================== -->
   <ItemGroup>
     <!-- HERE BE DRAGONS:
diff --git a/src/cascadia/LocalTests_TerminalApp/TerminalApp.LocalTests.vcxproj b/src/cascadia/LocalTests_TerminalApp/TerminalApp.LocalTests.vcxproj
index a5ad1da42c9..4d9ec0ab83f 100644
--- a/src/cascadia/LocalTests_TerminalApp/TerminalApp.LocalTests.vcxproj
+++ b/src/cascadia/LocalTests_TerminalApp/TerminalApp.LocalTests.vcxproj
@@ -30,14 +30,6 @@
   <Import Project="$(OpenConsoleDir)src\common.nugetversions.props" />
   <Import Project="$(OpenConsoleDir)\src\cppwinrt.build.pre.props" />
 
-  <ItemDefinitionGroup>
-    <ClCompile>
-      <!-- For CLI11: It uses dynamic_cast to cast types around, which depends
-      on being compiled with RTTI (/GR). -->
-      <RuntimeTypeInfo>true</RuntimeTypeInfo>
-    </ClCompile>
-  </ItemDefinitionGroup>
-
   <!-- ========================= Headers ======================== -->
   <ItemGroup>
     <ClInclude Include="pch.h" />
diff --git a/src/cascadia/TerminalApp/TerminalAppLib.vcxproj b/src/cascadia/TerminalApp/TerminalAppLib.vcxproj
index 6795761dae7..fb44aa7e60b 100644
--- a/src/cascadia/TerminalApp/TerminalAppLib.vcxproj
+++ b/src/cascadia/TerminalApp/TerminalAppLib.vcxproj
@@ -25,13 +25,6 @@
   <Import Project="..\..\..\common.openconsole.props" Condition="'$(OpenConsoleDir)'==''" />
   <Import Project="$(OpenConsoleDir)src\common.nugetversions.props" />
   <Import Project="$(OpenConsoleDir)src\cppwinrt.build.pre.props" />
-  <ItemDefinitionGroup>
-    <ClCompile>
-      <!-- For CLI11: It uses dynamic_cast to cast types around, which depends
-      on being compiled with RTTI (/GR). -->
-      <RuntimeTypeInfo>true</RuntimeTypeInfo>
-    </ClCompile>
-  </ItemDefinitionGroup>
   <!-- ========================= XAML files ======================== -->
   <ItemGroup>
     <!-- HERE BE DRAGONS:
diff --git a/src/cascadia/ut_app/TerminalApp.UnitTests.vcxproj b/src/cascadia/ut_app/TerminalApp.UnitTests.vcxproj
index 5371c8d0d71..b04be0014be 100644
--- a/src/cascadia/ut_app/TerminalApp.UnitTests.vcxproj
+++ b/src/cascadia/ut_app/TerminalApp.UnitTests.vcxproj
@@ -14,14 +14,6 @@
   <Import Project="$(OpenConsoleDir)\src\common.build.pre.props" />
   <Import Project="$(SolutionDir)\src\common.nugetversions.props" />
 
-  <ItemDefinitionGroup>
-    <ClCompile>
-      <!-- For CLI11: It uses dynamic_cast to cast types around, which depends
-      on being compiled with RTTI (/GR). -->
-      <RuntimeTypeInfo>true</RuntimeTypeInfo>
-    </ClCompile>
-  </ItemDefinitionGroup>
-
   <!-- ========================= Headers ======================== -->
   <ItemGroup>
     <ClInclude Include="precomp.h" />