diff --git a/continuous_integration/recipes/distributed/meta.yaml b/continuous_integration/recipes/distributed/meta.yaml
index 07c894cf009..bcdf132ab54 100644
--- a/continuous_integration/recipes/distributed/meta.yaml
+++ b/continuous_integration/recipes/distributed/meta.yaml
@@ -41,7 +41,7 @@ requirements:
     - sortedcontainers !=2.0.0,!=2.0.1
     - tblib >=1.6.0
     - toolz >=0.8.2
-    - tornado >=6.0.3
+    - tornado >=6.0.3,<6.2
     - urllib3
     - zict >=0.1.3
   run_constrained: