diff --git a/network-api-support.cabal b/network-api-support.cabal
--- a/network-api-support.cabal
+++ b/network-api-support.cabal
@@ -1,5 +1,5 @@
 Name:               network-api-support
-Version:            0.2.0
+Version:            0.2.1
 License:            BSD3
 License-File:       LICENSE
 Author:             Mark Hibberd <mark@hibberd.id.au>
@@ -37,7 +37,7 @@
                     , http-client-tls               >= 0.2.1.1    && < 0.3
                     , text                          >= 0.11       && < 1.3
                     , time                          == 1.*
-                    , tls                           == 1.2.*
+                    , tls                           >= 1.2.0      && < 1.4
 
   GHC-Options:
                     -Wall -fno-warn-orphans