diff --git a/webui/src/features/campaigns/utils/bulkImport.ts b/webui/src/features/campaigns/utils/bulkImport.ts
index d67e0c0..19405b4 100644
--- a/webui/src/features/campaigns/utils/bulkImport.ts
+++ b/webui/src/features/campaigns/utils/bulkImport.ts
@@ -4,6 +4,7 @@ type XlsxWorkbookSheet = {
   data: unknown[][];
 };
 type XlsxWorkbookReader = (input: ArrayBuffer) => Promise<XlsxWorkbookSheet[]>;
+type RawXlsxWorkbookReader = (input: unknown) => Promise<XlsxWorkbookSheet[]>;
 
 export type ImportFieldDefinition = {
   name: string;
@@ -210,6 +211,15 @@ async function loadXlsxWorkbookReader(): Promise<XlsxWorkbookReader> {
     const module = await import("read-excel-file/browser");
     return module.default as XlsxWorkbookReader;
   }
+  const globals = globalThis as typeof globalThis & {
+    Buffer?: { from(input: ArrayBuffer): unknown };
+    process?: { versions?: { node?: string } };
+  };
+  if (globals.process?.versions?.node && globals.Buffer?.from) {
+    const dynamicImport = new Function("specifier", "return import(specifier)") as (specifier: string) => Promise<{ default: RawXlsxWorkbookReader }>;
+    const module = await dynamicImport("read-excel-file/node");
+    return (input: ArrayBuffer) => module.default(globals.Buffer!.from(input));
+  }
   const module = await import("read-excel-file/universal");
   return module.default as XlsxWorkbookReader;
 }