diff --git a/packages/opencode/src/plugin/index.ts b/packages/opencode/src/plugin/index.ts
index e65d21bfd6..0fe6e049b6 100644
--- a/packages/opencode/src/plugin/index.ts
+++ b/packages/opencode/src/plugin/index.ts
@@ -19,7 +19,10 @@ export namespace Plugin {
   const BUILTIN = ["opencode-anthropic-auth@0.0.13"]
 
   // Built-in plugins that are directly imported (not installed from npm)
-  const INTERNAL_PLUGINS: PluginInstance[] = [CodexAuthPlugin, CopilotAuthPlugin, GitlabAuthPlugin]
+  // GitlabAuthPlugin uses a different version of @opencode-ai/plugin (from npm)
+  // vs the workspace version, causing a type mismatch on internal HeyApiClient.
+  // The types are structurally compatible at runtime.
+  const INTERNAL_PLUGINS: PluginInstance[] = [CodexAuthPlugin, CopilotAuthPlugin, GitlabAuthPlugin as unknown as PluginInstance]
 
   const state = Instance.state(async () => {
     const client = createOpencodeClient({