diff --git a/pyproject.toml b/pyproject.toml
index 75e8b970..e19bf4ad 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -84,11 +84,11 @@ deps =
     coverage
     gevent
     mock
-    pytest
+    pytest==7.4.4
     pytest-cov
     pyyaml
     pyzmq>=17.0
-    tornado>=5.0.2
+    tornado==6.2
 
 setenv =
     TESTING=1