diff --git a/frontend/src/api/client.ts b/frontend/src/api/client.ts
index 8fb2d1d..07b27e6 100644
--- a/frontend/src/api/client.ts
+++ b/frontend/src/api/client.ts
@@ -1,7 +1,21 @@
 import axios from 'axios'
 import { useAuthStore } from '../store/auth'
 
-export const api = axios.create({ baseURL: '/' })
+export const api = axios.create({
+  baseURL: '/',
+  paramsSerializer: (params) => {
+    const sp = new URLSearchParams()
+    for (const [key, val] of Object.entries(params)) {
+      if (val === undefined || val === null) continue
+      if (Array.isArray(val)) {
+        val.forEach((v) => sp.append(key, String(v)))
+      } else {
+        sp.append(key, String(val))
+      }
+    }
+    return sp.toString()
+  },
+})
 
 // Inject access token on every request
 api.interceptors.request.use((config) => {