diff --git a/eng/Versions.props b/eng/Versions.props
index 03baef07eb346..63c76bb834440 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -32,7 +32,7 @@
     <ILAsmPackageVersion>6.0.0-rtm.21518.12</ILAsmPackageVersion>
     <ILDAsmPackageVersion>6.0.0-rtm.21518.12</ILDAsmPackageVersion>
     <MicrosoftVisualStudioLanguageServerClientPackagesVersion>17.7.4-preview</MicrosoftVisualStudioLanguageServerClientPackagesVersion>
-    <MicrosoftVisualStudioLanguageServerProtocolPackagesVersion>17.8.8-preview</MicrosoftVisualStudioLanguageServerProtocolPackagesVersion>
+    <MicrosoftVisualStudioLanguageServerProtocolPackagesVersion>17.8.9-preview</MicrosoftVisualStudioLanguageServerProtocolPackagesVersion>
     <MicrosoftVisualStudioShellPackagesVersion>17.7.35038-preview.1</MicrosoftVisualStudioShellPackagesVersion>
     <RefOnlyMicrosoftBuildPackagesVersion>16.10.0</RefOnlyMicrosoftBuildPackagesVersion>
     <!-- The version of Roslyn we build Source Generators against that are built in this
diff --git a/src/Features/LanguageServer/ProtocolUnitTests/Definitions/GoToDefinitionTests.cs b/src/Features/LanguageServer/ProtocolUnitTests/Definitions/GoToDefinitionTests.cs
index c200f18da3a85..21dfb82201275 100644
--- a/src/Features/LanguageServer/ProtocolUnitTests/Definitions/GoToDefinitionTests.cs
+++ b/src/Features/LanguageServer/ProtocolUnitTests/Definitions/GoToDefinitionTests.cs
@@ -37,6 +37,8 @@ void M()
             await using var testLspServer = await CreateTestLspServerAsync(markup, mutatingLspWorkspace);
 
             var results = await RunGotoDefinitionAsync(testLspServer, testLspServer.GetLocations("caret").Single());
+            // Verify that as originally serialized, the URI had a file scheme.
+            Assert.True(results.Single().Uri.OriginalString.StartsWith("file"));
             AssertLocationsEqual(testLspServer.GetLocations("definition"), results);
         }