diff --git a/requirements.txt b/requirements.txt
index 3f084b2..cdda117 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-paho-mqtt>=1.5.0
-requests>=2.19.1
-aiohttp[speedups]>=3.7.4.post0
+paho-mqtt>=1.5.0, < 2.0.0
+requests>=2.19.1, < 3.0.0
+aiohttp[speedups]>=3.7.4.post0, < 4.0.0