diff --git a/pyproject.toml b/pyproject.toml
index 4cee481..c468818 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,8 +21,8 @@ classifiers = [
     "Operating System :: OS Independent",
 ]
 dependencies = [
-  "boto3>=1.34.15",
-  "tornado>=6.3.3",
+  "boto3>=1.10.0",
+  "tornado>=5.1.1",
 ]
 
 [tool.setuptools.packages.find]