diff --git a/NAPS2.Core/Lang/LanguageNames.Designer.cs b/NAPS2.Core/Lang/LanguageNames.Designer.cs
index 2de5ce3f7e..8573aace11 100644
--- a/NAPS2.Core/Lang/LanguageNames.Designer.cs
+++ b/NAPS2.Core/Lang/LanguageNames.Designer.cs
@@ -19,7 +19,7 @@ namespace NAPS2.Lang {
     // class via a tool like ResGen or Visual Studio.
     // To add or remove a member, edit your .ResX file then rerun ResGen
     // with the /str option, or rebuild your VS project.
-    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "15.0.0.0")]
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
     internal class LanguageNames {
@@ -330,6 +330,15 @@ internal static string ru {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to සිංහල.
+        /// </summary>
+        internal static string si {
+            get {
+                return ResourceManager.GetString("si", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to Slovenčina.
         /// </summary>
diff --git a/NAPS2.Core/Lang/LanguageNames.resx b/NAPS2.Core/Lang/LanguageNames.resx
index 29f1b88833..42b538a774 100644
--- a/NAPS2.Core/Lang/LanguageNames.resx
+++ b/NAPS2.Core/Lang/LanguageNames.resx
@@ -237,4 +237,7 @@
   <data name="nn" xml:space="preserve">
     <value>Nynorsk</value>
   </data>
+  <data name="si" xml:space="preserve">
+    <value>සිංහල</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/NAPS2/NAPS2.csproj b/NAPS2/NAPS2.csproj
index c87f915a46..0351c14054 100644
--- a/NAPS2/NAPS2.csproj
+++ b/NAPS2/NAPS2.csproj
@@ -164,6 +164,7 @@
     <Content Include="Setup\lib\64\twaindsm.dll" />
     <Content Include="Setup\lib\NTwain.dll" />
     <Content Include="Setup\lib\twaindsm.dll" />
+    <Content Include="Setup\setup.iss" />
     <Content Include="Setup\setup.languagefiles.iss">
       <AutoGen>True</AutoGen>
       <DesignTime>True</DesignTime>
@@ -173,7 +174,6 @@
     <None Include="Setup\lib\PdfSharp.dll" />
     <Content Include="scanner-app.ico" />
     <Content Include="Setup\license.txt" />
-    <Content Include="Setup\setup.iss" />
     <None Include="Setup\lib\wiaaut.dll" />
   </ItemGroup>
   <ItemGroup>
diff --git a/NAPS2/Setup/LanguageComponents.wxs b/NAPS2/Setup/LanguageComponents.wxs
index dfbcc758db..c096b6ca3a 100644
--- a/NAPS2/Setup/LanguageComponents.wxs
+++ b/NAPS2/Setup/LanguageComponents.wxs
@@ -31,6 +31,7 @@
       <ComponentRef Id="LangComponent_pt_PT" />
       <ComponentRef Id="LangComponent_ro" />
       <ComponentRef Id="LangComponent_ru" />
+      <ComponentRef Id="LangComponent_si" />
       <ComponentRef Id="LangComponent_sk" />
       <ComponentRef Id="LangComponent_sl" />
       <ComponentRef Id="LangComponent_sq" />
@@ -185,6 +186,11 @@
           <File Source="..\NAPS2\bin\InstallerMSI\ru\NAPS2.Core.resources.dll" Id="LangFile_ru" />
         </Component>
       </Directory>
+      <Directory Id="LangFolder_si" Name="si">
+        <Component Id="LangComponent_si">
+          <File Source="..\NAPS2\bin\InstallerMSI\si\NAPS2.Core.resources.dll" Id="LangFile_si" />
+        </Component>
+      </Directory>
       <Directory Id="LangFolder_sk" Name="sk">
         <Component Id="LangComponent_sk">
           <File Source="..\NAPS2\bin\InstallerMSI\sk\NAPS2.Core.resources.dll" Id="LangFile_sk" />
diff --git a/NAPS2/Setup/setup.languagefiles.iss b/NAPS2/Setup/setup.languagefiles.iss
index 710db71b0b..2c40ef5d9c 100644
--- a/NAPS2/Setup/setup.languagefiles.iss
+++ b/NAPS2/Setup/setup.languagefiles.iss
@@ -27,6 +27,7 @@ Source: "..\bin\InstallerEXE\pt-BR\NAPS2.Core.resources.dll"; DestDir: "{app}\\l
 Source: "..\bin\InstallerEXE\pt-PT\NAPS2.Core.resources.dll"; DestDir: "{app}\\lib\pt-PT"; Flags: ignoreversion
 Source: "..\bin\InstallerEXE\ro\NAPS2.Core.resources.dll"; DestDir: "{app}\\lib\ro"; Flags: ignoreversion
 Source: "..\bin\InstallerEXE\ru\NAPS2.Core.resources.dll"; DestDir: "{app}\\lib\ru"; Flags: ignoreversion
+Source: "..\bin\InstallerEXE\si\NAPS2.Core.resources.dll"; DestDir: "{app}\\lib\si"; Flags: ignoreversion
 Source: "..\bin\InstallerEXE\sk\NAPS2.Core.resources.dll"; DestDir: "{app}\\lib\sk"; Flags: ignoreversion
 Source: "..\bin\InstallerEXE\sl\NAPS2.Core.resources.dll"; DestDir: "{app}\\lib\sl"; Flags: ignoreversion
 Source: "..\bin\InstallerEXE\sq\NAPS2.Core.resources.dll"; DestDir: "{app}\\lib\sq"; Flags: ignoreversion