diff --git a/src/lib/plugins/server.ts b/src/lib/plugins/server.ts
index 422a0b7..d8e0304 100644
--- a/src/lib/plugins/server.ts
+++ b/src/lib/plugins/server.ts
@@ -9,6 +9,7 @@
  */
 
 import "server-only";
+import { Prisma } from "@/generated/prisma/client";
 import { prisma } from "@/lib/prisma";
 import { PLUGINS, type PluginDescriptor } from "./registry";
 import { pluginHooks } from "./hooks";
@@ -123,7 +124,10 @@ export async function togglePlugin(key: string, enabled: boolean): Promise<Plugi
 }
 
 export async function updatePluginConfig(key: string, config: Record<string, unknown>): Promise<PluginRow | null> {
-  await prisma.plugin.update({ where: { key }, data: { config } });
+  await prisma.plugin.update({
+    where: { key },
+    data: { config: config as Prisma.InputJsonValue },
+  });
   invalidatePluginCache();
   return await getPluginState(key);
 }