diff --git a/tests/baselines/reference/api/tsserverlibrary.d.ts b/tests/baselines/reference/api/tsserverlibrary.d.ts
index b255a258c8e54..1197da2e35ba5 100644
--- a/tests/baselines/reference/api/tsserverlibrary.d.ts
+++ b/tests/baselines/reference/api/tsserverlibrary.d.ts
@@ -8190,7 +8190,6 @@ declare namespace ts.server {
         protected enableGlobalPlugins(options: CompilerOptions, pluginConfigOverrides: Map<any> | undefined): void;
         protected enablePlugin(pluginConfigEntry: PluginImport, searchPaths: string[], pluginConfigOverrides: Map<any> | undefined): void;
         private enableProxy;
-        onPluginConfigurationChanged(pluginName: string, configuration: any): void;
         /** Starts a new check for diagnostics. Call this if some file has updated that would cause diagnostics to be changed. */
         refreshDiagnostics(): void;
     }