diff --git a/src/Core/PracticeFusion.MmeCalculator.Core/PracticeFusion.MmeCalculator.Core.csproj b/src/Core/PracticeFusion.MmeCalculator.Core/PracticeFusion.MmeCalculator.Core.csproj
index 7a36f65..d9c1789 100644
--- a/src/Core/PracticeFusion.MmeCalculator.Core/PracticeFusion.MmeCalculator.Core.csproj
+++ b/src/Core/PracticeFusion.MmeCalculator.Core/PracticeFusion.MmeCalculator.Core.csproj
@@ -39,7 +39,7 @@
         <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All"/>
         <PackageReference Include="MinVer" Version="4.3.0" PrivateAssets="All"/>
 
-        <PackageReference Include="Antlr4.Runtime.Standard" Version="4.12.0"/>
+        <PackageReference Include="Antlr4.Runtime.Standard" Version="4.13.1"/>
         <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="7.0.0"/>
         <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="7.0.0"/>
         <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="7.0.0"/>