diff --git a/modules/mono/editor/GodotTools/GodotTools.BuildLogger/GodotTools.BuildLogger.csproj b/modules/mono/editor/GodotTools/GodotTools.BuildLogger/GodotTools.BuildLogger.csproj
index f3ac353c0f8..dcfdd838316 100644
--- a/modules/mono/editor/GodotTools/GodotTools.BuildLogger/GodotTools.BuildLogger.csproj
+++ b/modules/mono/editor/GodotTools/GodotTools.BuildLogger/GodotTools.BuildLogger.csproj
@@ -11,6 +11,7 @@
     <AssemblyName>GodotTools.BuildLogger</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
+    <LangVersion>7</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
diff --git a/modules/mono/editor/GodotTools/GodotTools.Core/GodotTools.Core.csproj b/modules/mono/editor/GodotTools/GodotTools.Core/GodotTools.Core.csproj
index f36b40f87c8..24c7cb15735 100644
--- a/modules/mono/editor/GodotTools/GodotTools.Core/GodotTools.Core.csproj
+++ b/modules/mono/editor/GodotTools/GodotTools.Core/GodotTools.Core.csproj
@@ -8,6 +8,7 @@
     <RootNamespace>GodotTools.Core</RootNamespace>
     <AssemblyName>GodotTools.Core</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <LangVersion>7</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/modules/mono/editor/GodotTools/GodotTools.IdeConnection/GodotTools.IdeConnection.csproj b/modules/mono/editor/GodotTools/GodotTools.IdeConnection/GodotTools.IdeConnection.csproj
index 84c08251aba..94e525715b2 100644
--- a/modules/mono/editor/GodotTools/GodotTools.IdeConnection/GodotTools.IdeConnection.csproj
+++ b/modules/mono/editor/GodotTools/GodotTools.IdeConnection/GodotTools.IdeConnection.csproj
@@ -11,6 +11,7 @@
     <AssemblyName>GodotTools.IdeConnection</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
+    <LangVersion>7</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
diff --git a/modules/mono/editor/GodotTools/GodotTools.ProjectEditor/GodotTools.ProjectEditor.csproj b/modules/mono/editor/GodotTools/GodotTools.ProjectEditor/GodotTools.ProjectEditor.csproj
index 08b8ba3946c..c745fe321bb 100644
--- a/modules/mono/editor/GodotTools/GodotTools.ProjectEditor/GodotTools.ProjectEditor.csproj
+++ b/modules/mono/editor/GodotTools/GodotTools.ProjectEditor/GodotTools.ProjectEditor.csproj
@@ -9,6 +9,7 @@
     <AssemblyName>GodotTools.ProjectEditor</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <BaseIntermediateOutputPath>obj</BaseIntermediateOutputPath>
+    <LangVersion>7</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/modules/mono/editor/GodotTools/GodotTools/GodotTools.csproj b/modules/mono/editor/GodotTools/GodotTools/GodotTools.csproj
index e2d576caef9..3c579008734 100644
--- a/modules/mono/editor/GodotTools/GodotTools/GodotTools.csproj
+++ b/modules/mono/editor/GodotTools/GodotTools/GodotTools.csproj
@@ -10,6 +10,7 @@
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <GodotSourceRootPath>$(SolutionDir)/../../../../</GodotSourceRootPath>
     <GodotApiConfiguration>Debug</GodotApiConfiguration>
+    <LangVersion>7</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/modules/mono/glue/Managed/Managed.csproj b/modules/mono/glue/Managed/Managed.csproj
index ad55fe95397..c8eca711990 100644
--- a/modules/mono/glue/Managed/Managed.csproj
+++ b/modules/mono/glue/Managed/Managed.csproj
@@ -8,6 +8,7 @@
     <RootNamespace>Managed</RootNamespace>
     <AssemblyName>Managed</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <LangVersion>7</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
     <DebugSymbols>true</DebugSymbols>