diff --git a/keter.cabal b/keter.cabal
index 27caec8..0f09630 100644
--- a/keter.cabal
+++ b/keter.cabal
@@ -64,7 +64,7 @@ library
       template-haskell >=2.17.0 && <3.0,
       text >=1.2.5 && <3.0,
       time >=1.9.3 && <2.0,
-      tls >=1.5.7 && <2.0 || ^>=2.0.0,
+      tls >=1.5.7 && <2.1 || ^>= 2.1.0 || ^>=2.1.1,
       tls-session-manager >=0.0.4 && <0.1,
       transformers >=0.5.6 && <0.7,
       unix >=2.7.2 && <2.9,