diff --git a/adventofcode.csproj b/adventofcode.csproj
old mode 100755
new mode 100644
index 4c1e823d..999d8dd4
--- a/adventofcode.csproj
+++ b/adventofcode.csproj
@@ -9,7 +9,7 @@
     <EnableDynamicCodeSupport>true</EnableDynamicCodeSupport>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="AngleSharp" Version="0.14.0" />
+    <PackageReference Include="AngleSharp" Version="1.5.0" />
     <PackageReference Include="AngleSharp.Css" Version="0.14.0" />
   </ItemGroup>
 </Project>