diff --git a/src/modules/launcher/Plugins/Wox.Plugin.Calculator/Wox.Plugin.Calculator.csproj b/src/modules/launcher/Plugins/Wox.Plugin.Calculator/Wox.Plugin.Calculator.csproj
index 123d305c50..376c8a4252 100644
--- a/src/modules/launcher/Plugins/Wox.Plugin.Calculator/Wox.Plugin.Calculator.csproj
+++ b/src/modules/launcher/Plugins/Wox.Plugin.Calculator/Wox.Plugin.Calculator.csproj
@@ -33,6 +33,7 @@
     <LangVersion>7.3</LangVersion>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="JetBrains.Annotations, Version=10.3.0.0, Culture=neutral, PublicKeyToken=1010a0d8d6380325, processorArchitecture=MSIL">
diff --git a/src/modules/launcher/Plugins/Wox.Plugin.Folder/Wox.Plugin.Folder.csproj b/src/modules/launcher/Plugins/Wox.Plugin.Folder/Wox.Plugin.Folder.csproj
index 76a2664a2d..b95810e352 100644
--- a/src/modules/launcher/Plugins/Wox.Plugin.Folder/Wox.Plugin.Folder.csproj
+++ b/src/modules/launcher/Plugins/Wox.Plugin.Folder/Wox.Plugin.Folder.csproj
@@ -33,6 +33,7 @@
     <LangVersion>7.3</LangVersion>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="JetBrains.Annotations, Version=10.3.0.0, Culture=neutral, PublicKeyToken=1010a0d8d6380325, processorArchitecture=MSIL">
diff --git a/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Wox.Plugin.Indexer.csproj b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Wox.Plugin.Indexer.csproj
index b5866610e3..76a6b8db73 100644
--- a/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Wox.Plugin.Indexer.csproj
+++ b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/Wox.Plugin.Indexer.csproj
@@ -33,6 +33,7 @@
     <LangVersion>7.3</LangVersion>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Microsoft.Search.Interop, Version=1.0.0.0, Culture=neutral, PublicKeyToken=9f748985a6e9a7cb, processorArchitecture=MSIL">
diff --git a/src/modules/launcher/Plugins/Wox.Plugin.Program/Wox.Plugin.Program.csproj b/src/modules/launcher/Plugins/Wox.Plugin.Program/Wox.Plugin.Program.csproj
index 8278c262b9..ae98816295 100644
--- a/src/modules/launcher/Plugins/Wox.Plugin.Program/Wox.Plugin.Program.csproj
+++ b/src/modules/launcher/Plugins/Wox.Plugin.Program/Wox.Plugin.Program.csproj
@@ -35,6 +35,7 @@
     <LangVersion>7.3</LangVersion>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="AppxPackagingTlb">
diff --git a/src/modules/launcher/Plugins/Wox.Plugin.Shell/Wox.Plugin.Shell.csproj b/src/modules/launcher/Plugins/Wox.Plugin.Shell/Wox.Plugin.Shell.csproj
index 77a8b72b62..542a7c5791 100644
--- a/src/modules/launcher/Plugins/Wox.Plugin.Shell/Wox.Plugin.Shell.csproj
+++ b/src/modules/launcher/Plugins/Wox.Plugin.Shell/Wox.Plugin.Shell.csproj
@@ -33,6 +33,7 @@
     <LangVersion>7.3</LangVersion>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="JetBrains.Annotations, Version=10.3.0.0, Culture=neutral, PublicKeyToken=1010a0d8d6380325, processorArchitecture=MSIL">
diff --git a/src/modules/launcher/Wox.Core/Wox.Core.csproj b/src/modules/launcher/Wox.Core/Wox.Core.csproj
index 342c65868b..b00a732b34 100644
--- a/src/modules/launcher/Wox.Core/Wox.Core.csproj
+++ b/src/modules/launcher/Wox.Core/Wox.Core.csproj
@@ -35,6 +35,7 @@
     <LangVersion>7.3</LangVersion>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="PresentationCore" />
diff --git a/src/modules/launcher/Wox.Infrastructure/Wox.Infrastructure.csproj b/src/modules/launcher/Wox.Infrastructure/Wox.Infrastructure.csproj
index 005f67e57f..cbf10688df 100644
--- a/src/modules/launcher/Wox.Infrastructure/Wox.Infrastructure.csproj
+++ b/src/modules/launcher/Wox.Infrastructure/Wox.Infrastructure.csproj
@@ -34,6 +34,7 @@
     <LangVersion>7.3</LangVersion>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="PresentationCore" />
diff --git a/src/modules/launcher/Wox.Plugin/Wox.Plugin.csproj b/src/modules/launcher/Wox.Plugin/Wox.Plugin.csproj
index bcc1d624bc..854001b21c 100644
--- a/src/modules/launcher/Wox.Plugin/Wox.Plugin.csproj
+++ b/src/modules/launcher/Wox.Plugin/Wox.Plugin.csproj
@@ -34,6 +34,7 @@
     <LangVersion>7.3</LangVersion>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="PresentationCore" />
diff --git a/src/modules/launcher/Wox.Test/Wox.Test.csproj b/src/modules/launcher/Wox.Test/Wox.Test.csproj
index 385698bc36..4d567768b3 100644
--- a/src/modules/launcher/Wox.Test/Wox.Test.csproj
+++ b/src/modules/launcher/Wox.Test/Wox.Test.csproj
@@ -35,6 +35,7 @@
     <LangVersion>7.3</LangVersion>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
diff --git a/src/modules/launcher/Wox/Wox.csproj b/src/modules/launcher/Wox/Wox.csproj
index f5266640d0..09f8fdbaa0 100644
--- a/src/modules/launcher/Wox/Wox.csproj
+++ b/src/modules/launcher/Wox/Wox.csproj
@@ -61,6 +61,7 @@
     <LangVersion>7.3</LangVersion>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="PresentationUI, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL" />