diff --git a/http-conduit.cabal b/http-conduit.cabal
--- a/http-conduit.cabal
+++ b/http-conduit.cabal
@@ -1,5 +1,5 @@
 name:            http-conduit
-version:         1.9.4.4
+version:         1.9.4.5
 license:         BSD3
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>
@@ -22,6 +22,9 @@
 flag network-bytestring
   default: False
 
+flag tls_1_1_3
+    default: True
+
 library
     build-depends: base                  >= 4       && < 5
                  , bytestring            >= 0.9.1.4
@@ -64,6 +67,12 @@
                      , network-bytestring    >= 0.1.3   && < 0.1.4
     else
         build-depends: network               >= 2.3
+    if flag(tls_1_1_3)
+      build-depends: tls >= 1.1.3
+                   , cprng-aes >= 0.5.0
+    else
+      build-depends: tls < 1.1.3
+                   , cprng-aes < 0.5.0
     exposed-modules: Network.HTTP.Conduit
                      Network.HTTP.Conduit.Internal
                      Network.HTTP.Conduit.MultipartFormData