diff --git a/amazonka-core.cabal b/amazonka-core.cabal
--- a/amazonka-core.cabal
+++ b/amazonka-core.cabal
@@ -1,5 +1,5 @@
 name:                  amazonka-core
-version:               0.0.7
+version:               0.0.7.1
 synopsis:              Core functionality and data types for Amazonka libraries.
 homepage:              https://github.com/brendanhay/amazonka
 license:               OtherLicense
@@ -90,7 +90,7 @@
         , lens                 >= 4.3    && < 5
         , mmorph               >= 1      && < 2
         , mtl                  >= 2.2.1  && < 2.3
-        , nats                 >= 0.1.3
+        , nats                 >= 0.1.3  && < 1
         , old-locale           >= 1
         , resourcet            == 1.1.*
         , semigroups           >= 0.12