diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,16 @@
 
 `hslua` uses [PVP Versioning][].
 
+## hslua-2.2.1
+
+Released 2022-06-19.
+
+-   Require hslua-core-2.2.1.
+
+-   Require hslua-marshalling-2.2.0.1.
+
+-   Relax upper bound for mtl, allow mtl-2.3.
+
 ## hslua-2.2.0
 
 Released 2022-02-19.
diff --git a/hslua.cabal b/hslua.cabal
--- a/hslua.cabal
+++ b/hslua.cabal
@@ -1,6 +1,6 @@
 cabal-version:       2.2
 name:                hslua
-version:             2.2.0
+version:             2.2.1
 synopsis:            Bindings to Lua, an embeddable scripting language
 description:         HsLua provides wrappers and helpers
                      to bridge Haskell and <https://www.lua.org/ Lua>.
@@ -31,8 +31,8 @@
                    , GHC == 8.6.5
                    , GHC == 8.8.4
                    , GHC == 8.10.7
-                   , GHC == 9.0.1
-                   , GHC == 9.2.1
+                   , GHC == 9.0.2
+                   , GHC == 9.2.3
 
 source-repository head
   type:                git
@@ -45,12 +45,12 @@
                      , containers              >= 0.5.9  && < 0.7
                      , exceptions              >= 0.8    && < 0.11
                      , hslua-aeson             >= 2.2    && < 2.3
-                     , hslua-core              >= 2.2    && < 2.3
+                     , hslua-core              >= 2.2.1  && < 2.3
                      , hslua-classes           >= 2.2    && < 2.3
-                     , hslua-marshalling       >= 2.2    && < 2.3
-                     , hslua-objectorientation >= 2.2    && < 2.3
-                     , hslua-packaging         >= 2.2    && < 2.3
-                     , mtl                     >= 2.2    && < 2.3
+                     , hslua-marshalling       >= 2.2.1  && < 2.3
+                     , hslua-objectorientation >= 2.2.1  && < 2.3
+                     , hslua-packaging         >= 2.2.1  && < 2.3
+                     , mtl                     >= 2.2    && < 2.4
                      , text                    >= 1.2    && < 2.1
   ghc-options:         -Wall
                        -Wincomplete-record-updates