diff --git a/src/http/base-http.ts b/src/http/base-http.ts
index 0f2ef027d..c0605e85e 100644
--- a/src/http/base-http.ts
+++ b/src/http/base-http.ts
@@ -1,10 +1,10 @@
 import { MastoConfig } from '../config';
-import { MimeType, Serializer } from '../serializers';
+import { MimeType } from '../serializers';
+import { railsQueryString } from '../serializers/rails-querystring';
 import { Data, Headers, Http, Request, Response } from './http';
 
 export abstract class BaseHttp implements Http {
   abstract readonly config: MastoConfig;
-  abstract readonly serializer: Serializer;
 
   abstract request<T>(request: Request): Promise<Response<T>>;
 
@@ -19,11 +19,12 @@ export abstract class BaseHttp implements Http {
     return headers;
   }
 
+  encodeParams(params: Data = {}) {
+    return railsQueryString.stringify(params);
+  }
+
   resolveUrl(path: string, params: Data = {}) {
-    const searchParams = this.serializer.serialize(
-      'application/x-www-form-urlencoded',
-      params,
-    );
+    const searchParams = this.encodeParams(params);
 
     return `${this.config.url}${path}${
       searchParams !== '' ? `?${searchParams}` : ''
diff --git a/src/http/http-axios-impl.ts b/src/http/http-axios-impl.ts
index 59b4cca71..16e41c53d 100644
--- a/src/http/http-axios-impl.ts
+++ b/src/http/http-axios-impl.ts
@@ -57,11 +57,7 @@ export class HttpAxiosImpl extends BaseHttp implements Http {
         return this.serializer.deserialize(contentType, data);
       },
       paramsSerializer: {
-        serialize: (params) =>
-          this.serializer.serialize(
-            'application/x-www-form-urlencoded',
-            params,
-          ) as string,
+        serialize: (params) => this.encodeParams(params),
       },
     });
   }
diff --git a/src/serializers/rails-querystring.spec.ts b/src/serializers/rails-querystring.spec.ts
new file mode 100644
index 000000000..c5f1f85fd
--- /dev/null
+++ b/src/serializers/rails-querystring.spec.ts
@@ -0,0 +1,37 @@
+import { railsQueryString } from './rails-querystring';
+
+describe('railsQueryString', () => {
+  it('encodes null', () => {
+    const result = railsQueryString.stringify(null);
+    expect(result).toBe('');
+  });
+
+  it('encodes an empty object', () => {
+    const result = railsQueryString.stringify({});
+    expect(result).toBe('');
+  });
+
+  it('encodes a basic record', () => {
+    const result = railsQueryString.stringify({ key: 'value' });
+    expect(result).toBe('key=value');
+  });
+
+  it('encodes a record with multiple values', () => {
+    const result = railsQueryString.stringify({
+      key1: 'value1',
+      key2: 'value2',
+    });
+    expect(result).toBe('key1=value1&key2=value2');
+  });
+
+  it('encodes an array inside a record', () => {
+    const result = railsQueryString.stringify({
+      key1: 'value1',
+      key2: 'value2',
+      key3: ['apple', 'facebook', 'microsoft'],
+    });
+    expect(result).toBe(
+      'key1=value1&key2=value2&key3[]=apple&key3[]=facebook&key3[]=microsoft',
+    );
+  });
+});
diff --git a/src/serializers/rails-querystring.ts b/src/serializers/rails-querystring.ts
new file mode 100644
index 000000000..861bacbac
--- /dev/null
+++ b/src/serializers/rails-querystring.ts
@@ -0,0 +1,30 @@
+import { isObject } from './is-object';
+
+/**
+ * Encodes URI in Rails format
+ */
+const stringify = (object?: unknown): string => {
+  if (object == null) {
+    return '';
+  }
+  if (!isObject(object)) {
+    return '';
+  }
+
+  const values = Object.entries(object)
+    .reduce<string[]>((prev, [k, v]) => {
+      if (Array.isArray(v)) {
+        const xs = v.map((x) => `${k}[]=${x}`);
+        return prev.concat(...xs);
+      }
+      if (isObject(v)) {
+        throw new TypeError('Encoding nested object is not supported');
+      }
+      return prev.concat(`${k}=${v}`);
+    }, [])
+    .join('&');
+
+  return values;
+};
+
+export const railsQueryString = { stringify };
diff --git a/src/ws/base-ws.ts b/src/ws/base-ws.ts
index 5cc3e0914..b71ea3020 100644
--- a/src/ws/base-ws.ts
+++ b/src/ws/base-ws.ts
@@ -2,6 +2,7 @@ import semver from 'semver';
 
 import { MastoConfig } from '../config';
 import { Serializer } from '../serializers';
+import { railsQueryString } from '../serializers/rails-querystring';
 import { Ws, WsEvents } from './ws';
 
 export abstract class BaseWs implements Ws {
@@ -30,11 +31,7 @@ export abstract class BaseWs implements Ws {
     if (!this.supportsSecureToken()) {
       params.accessToken = this.config.accessToken;
     }
-
-    const query = this.serializer.serialize(
-      'application/x-www-form-urlencoded',
-      params,
-    );
+    const query = railsQueryString.stringify(params);
 
     return this.baseUrl + path + (query !== '' ? `?${query}` : '');
   }