diff --git a/adventofcode.csproj b/adventofcode.csproj
old mode 100755
new mode 100644
index 51f73872..45456847
--- a/adventofcode.csproj
+++ b/adventofcode.csproj
@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="AngleSharp" Version="0.17.0" />
+    <PackageReference Include="AngleSharp" Version="1.5.0" />
     <PackageReference Include="AngleSharp.Css" Version="0.17.0" />
     <PackageReference Include="Cocona.Lite" Version="2.2.0" />
     <PackageReference Include="Microsoft.CodeAnalysis" Version="4.11.0" />