diff --git a/requirements.txt b/requirements.txt
index 69b5019..4fdc259 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1,2 @@
-slackclient==1.0.2
+slackclient<1.2.0,>=1.0.2  # MIT
+SQLAlchemy<1.1.0,>=1.0.10 # MIT