diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright © 2017–2018 Albert Krewinkel
+Copyright © 2017–2019 Albert Krewinkel
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,12 @@
 # hslua-aeson
 
+## v1.0.1
+
+Released 2020-04-03
+
+- Relax version constraint for packages hashable and hslua, allow
+  `hashable-1.3` and `hslua-1.1.*`.
+
 ## v1.0.0
 
 - Update to hslua 1.0.0
diff --git a/hslua-aeson.cabal b/hslua-aeson.cabal
--- a/hslua-aeson.cabal
+++ b/hslua-aeson.cabal
@@ -1,5 +1,5 @@
 name:                hslua-aeson
-version:             1.0.0
+version:             1.0.1
 synopsis:            Allow aeson data types to be used with lua.
 description:         This package provides instances to push and receive any
                      datatype encodable as JSON to and from the Lua stack.
@@ -8,7 +8,7 @@
 license-file:        LICENSE
 author:              Albert Krewinkel
 maintainer:          tarleb+hslua@zeitkraut.de
-copyright:           © 2017–2018 Albert Krewinkel
+copyright:           © 2017–2020 Albert Krewinkel
 category:            Foreign
 build-type:          Simple
 extra-source-files:  README.md
@@ -24,8 +24,8 @@
   exposed-modules:     Foreign.Lua.Aeson
   build-depends:       base                 >= 4.7     && < 5
                      , aeson                >= 0.11    && < 1.5
-                     , hashable             >= 1.2     && < 1.3
-                     , hslua                >= 1.0     && < 1.1
+                     , hashable             >= 1.2     && < 1.4
+                     , hslua                >= 1.0     && < 1.2
                      , scientific           >= 0.3     && < 0.4
                      , text                 >= 1.1.1.0 && < 1.3
                      , unordered-containers >= 0.2     && < 0.3
diff --git a/src/Foreign/Lua/Aeson.hs b/src/Foreign/Lua/Aeson.hs
--- a/src/Foreign/Lua/Aeson.hs
+++ b/src/Foreign/Lua/Aeson.hs
@@ -2,7 +2,7 @@
 {-# LANGUAGE LambdaCase #-}
 {-|
 Module      :  Foreign.Lua.Aeson
-Copyright   :  © 2017–2018 Albert Krewinkel
+Copyright   :  © 2017–2020 Albert Krewinkel
 License     :  MIT
 
 Maintainer  :  Albert Krewinkel <tarleb@zeitkraut.de>
diff --git a/test/AesonSpec.hs b/test/AesonSpec.hs
--- a/test/AesonSpec.hs
+++ b/test/AesonSpec.hs
@@ -1,6 +1,6 @@
 {-# OPTIONS_GHC -fno-warn-orphans #-}
 {-|
-Copyright   :  © 2017–2018 Albert Krewinkel
+Copyright   :  © 2017–2020 Albert Krewinkel
 License     :  MIT
 
 Tests for Aeson–Lua glue.
@@ -121,7 +121,7 @@
     [ (1, return Aeson.Null)
     , (4, Aeson.Bool <$> arbitrary)
     -- FIXME: this is cheating: we don't draw numbers from the whole possible
-    -- range, but only fro the range of nubers that can pass through the lua
+    -- range, but only from the range of nubers that can pass through the Lua
     -- stack without rounding errors. Good enough for now, but we still might
     -- want to do better in the future.
     , (4, Aeson.Number . luaNumberToScientific . Lua.Number <$> arbitrary)