diff --git a/.idea/watcherTasks.xml b/.idea/watcherTasks.xml
index 00e48b4..ca65b90 100644
--- a/.idea/watcherTasks.xml
+++ b/.idea/watcherTasks.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ProjectTasksOptions">
-    <TaskOptions isEnabled="true">
+    <TaskOptions isEnabled="false">
       <option name="arguments" value="$FilePath$" />
       <option name="checkSyntaxErrors" value="true" />
       <option name="description" />
diff --git a/lib/api.py b/lib/api.py
index 0694d23..37351a6 100644
--- a/lib/api.py
+++ b/lib/api.py
@@ -104,7 +104,7 @@ class API:
                 if isinstance(resp, bytes):
                     break
 
-                if resp.get("retry_after_ms"):
+                if isinstance(resp, dict) and resp.get("retry_after_ms"):
                     await asyncio.sleep(resp["retry_after_ms"] / 1000)
                 else:
                     break
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..ee4ba4f
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+aiohttp