diff --git a/AIMS/AIMS.csproj b/AIMS/AIMS.csproj
index dc2f2d9..fe2562d 100644
--- a/AIMS/AIMS.csproj
+++ b/AIMS/AIMS.csproj
@@ -9,6 +9,7 @@
     <RootNamespace>AIMS</RootNamespace>
     <AssemblyName>AIMS</AssemblyName>
     <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <LangVersion>Latest</LangVersion>
     <FileAlignment>512</FileAlignment>
     <Deterministic>true</Deterministic>
   </PropertyGroup>
diff --git a/AIMSAutoUpdate/AIMSAutoUpdate.csproj b/AIMSAutoUpdate/AIMSAutoUpdate.csproj
index 89d0673..d6235da 100644
--- a/AIMSAutoUpdate/AIMSAutoUpdate.csproj
+++ b/AIMSAutoUpdate/AIMSAutoUpdate.csproj
@@ -11,6 +11,7 @@
     <RootNamespace>AIMSAutoUpdate</RootNamespace>
     <AssemblyName>AIMSAutoUpdate</AssemblyName>
     <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <LangVersion>Latest</LangVersion>
     <TargetFrameworkProfile>
     </TargetFrameworkProfile>
     <FileAlignment>512</FileAlignment>
diff --git a/AIMSControls/AIMSControls.csproj b/AIMSControls/AIMSControls.csproj
index ba958a1..bae9b71 100644
--- a/AIMSControls/AIMSControls.csproj
+++ b/AIMSControls/AIMSControls.csproj
@@ -10,6 +10,7 @@
     <AssemblyName>AIMSControls</AssemblyName>
     <!-- <TargetFramework>.NETFramework,Version=v4.8</TargetFramework> -->
     <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <LangVersion>Latest</LangVersion>
     <FileAlignment>512</FileAlignment>
     <Deterministic>true</Deterministic>
   </PropertyGroup>
diff --git a/AIMSEntity/AIMSEntity.csproj b/AIMSEntity/AIMSEntity.csproj
index 691143c..e4d8448 100644
--- a/AIMSEntity/AIMSEntity.csproj
+++ b/AIMSEntity/AIMSEntity.csproj
@@ -9,6 +9,7 @@
     <RootNamespace>AIMSEntity</RootNamespace>
     <AssemblyName>AIMSEntity</AssemblyName>
     <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <LangVersion>Latest</LangVersion>
     <FileAlignment>512</FileAlignment>
     <Deterministic>true</Deterministic>
     <TargetFrameworkProfile />
diff --git a/AIMSExtension/AIMSExtension.csproj b/AIMSExtension/AIMSExtension.csproj
index 4ba431b..723ffab 100644
--- a/AIMSExtension/AIMSExtension.csproj
+++ b/AIMSExtension/AIMSExtension.csproj
@@ -11,6 +11,7 @@
     <RootNamespace>AIMSExtension</RootNamespace>
     <AssemblyName>AIMSExtension</AssemblyName>
     <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <LangVersion>Latest</LangVersion>
     <FileAlignment>512</FileAlignment>
     <TargetFrameworkProfile />
   </PropertyGroup>
diff --git a/AutoUpdateTool/AutoUpdateTool.csproj b/AutoUpdateTool/AutoUpdateTool.csproj
index 65a13b3..5b7bf33 100644
--- a/AutoUpdateTool/AutoUpdateTool.csproj
+++ b/AutoUpdateTool/AutoUpdateTool.csproj
@@ -9,6 +9,7 @@
     <RootNamespace>AutoUpdateTool</RootNamespace>
     <AssemblyName>AutoUpdateTool</AssemblyName>
     <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <LangVersion>Latest</LangVersion>
     <FileAlignment>512</FileAlignment>
     <Deterministic>true</Deterministic>
     <TargetFrameworkProfile />
diff --git a/BeginScreen/BeginScreen.csproj b/BeginScreen/BeginScreen.csproj
index d0315c8..a94c30d 100644
--- a/BeginScreen/BeginScreen.csproj
+++ b/BeginScreen/BeginScreen.csproj
@@ -14,6 +14,7 @@
     <RootNamespace>BeginScreen</RootNamespace>
     <AssemblyName>BeginScreen</AssemblyName>
     <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <LangVersion>Latest</LangVersion>
     <UseIISExpress>false</UseIISExpress>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/DocumentManagement/DocumentManagement.csproj b/DocumentManagement/DocumentManagement.csproj
index 215e0b4..a7794eb 100644
--- a/DocumentManagement/DocumentManagement.csproj
+++ b/DocumentManagement/DocumentManagement.csproj
@@ -11,6 +11,7 @@
     <RootNamespace>DocumentManagement</RootNamespace>
     <AssemblyName>DocumentManagement</AssemblyName>
     <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <LangVersion>Latest</LangVersion>
     <FileAlignment>512</FileAlignment>
     <NuGetPackageImportStamp>
     </NuGetPackageImportStamp>
diff --git a/DrawGraph/DrawGraph.csproj b/DrawGraph/DrawGraph.csproj
index c68f9f4..2be154e 100644
--- a/DrawGraph/DrawGraph.csproj
+++ b/DrawGraph/DrawGraph.csproj
@@ -9,6 +9,7 @@
     <RootNamespace>DrawGraph</RootNamespace>
     <AssemblyName>DrawGraph</AssemblyName>
     <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <LangVersion>Latest</LangVersion>
     <FileAlignment>512</FileAlignment>
     <Deterministic>true</Deterministic>
     <TargetFrameworkProfile />
diff --git a/DrawGraphManagement/DrawGraphManagement.csproj b/DrawGraphManagement/DrawGraphManagement.csproj
index 6086164..a15d47f 100644
--- a/DrawGraphManagement/DrawGraphManagement.csproj
+++ b/DrawGraphManagement/DrawGraphManagement.csproj
@@ -11,6 +11,7 @@
     <RootNamespace>DrawGraphManagement</RootNamespace>
     <AssemblyName>DrawGraphManagement</AssemblyName>
     <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <LangVersion>Latest</LangVersion>
     <TargetFrameworkProfile>
     </TargetFrameworkProfile>
     <FileAlignment>512</FileAlignment>