diff --git a/requirements.txt b/requirements.txt
index 2ff9137e..8ac0f173 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-uvicorn==0.23.1
+uvicorn==0.22.0  # v0.22.0 is the last to support Python 3.7
 fastapi==0.99.1
 python-multipart==0.0.6
 websockets==11.0.3