diff --git a/GHPT/GHPT.csproj b/GHPT/GHPT.csproj
index 77cde09..ed039d4 100644
--- a/GHPT/GHPT.csproj
+++ b/GHPT/GHPT.csproj
@@ -25,7 +25,7 @@
   
   <ItemGroup>
     <PackageReference Include="FuzzySharp" Version="2.0.2" />
-    <PackageReference Include="Grasshopper" Version="7.13.21348.13001" IncludeAssets="compile;build" />
+    <PackageReference Include="Grasshopper" Version="6.35.21222.17001" IncludeAssets="compile;build" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="System.Text.Json" Version="7.0.3" />
   </ItemGroup>
@@ -70,4 +70,4 @@
     <StartAction>Program</StartAction>
   </PropertyGroup>
 
-</Project>
\ No newline at end of file
+</Project>