diff --git a/ScipDotnet.Tests/ScipDotnet.Tests.csproj b/ScipDotnet.Tests/ScipDotnet.Tests.csproj
index 1e6be79..d04d3d7 100644
--- a/ScipDotnet.Tests/ScipDotnet.Tests.csproj
+++ b/ScipDotnet.Tests/ScipDotnet.Tests.csproj
@@ -8,7 +8,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="DiffPlex" Version="1.7.1" />
+        <PackageReference Include="DiffPlex" Version="1.9.0" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.1.0" />
         <PackageReference Include="NUnit" Version="3.13.3" />
         <PackageReference Include="NUnit3TestAdapter" Version="5.0.0" />
diff --git a/snapshots/input/syntax/Main/Main.csproj b/snapshots/input/syntax/Main/Main.csproj
index 4346fb7..c9db189 100644
--- a/snapshots/input/syntax/Main/Main.csproj
+++ b/snapshots/input/syntax/Main/Main.csproj
@@ -10,7 +10,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="DiffPlex" Version="1.7.1" />
+    <PackageReference Include="DiffPlex" Version="1.9.0" />
   </ItemGroup>
 
 </Project>
\ No newline at end of file
diff --git a/snapshots/input/syntax/VBMain/VBMain.vbproj b/snapshots/input/syntax/VBMain/VBMain.vbproj
index dc4c988..03c9631 100644
--- a/snapshots/input/syntax/VBMain/VBMain.vbproj
+++ b/snapshots/input/syntax/VBMain/VBMain.vbproj
@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="DiffPlex" Version="1.7.1" />
+    <PackageReference Include="DiffPlex" Version="1.9.0" />
   </ItemGroup>
 
 </Project>
\ No newline at end of file