diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,13 @@
+# optics-0.4.2 (2022-05-19)
+* Allow `transformers-0.6` and `mtl-2.3`
+
+  Note that `optics-extra` no longer defines `Zoom` instances for `ErrorT` or `ListT` when
+  building with `mtl-2.3` or later. This is because `MonadState` is a superclass of
+  `Zoom`, and the `MonadState` instances for `ErrorT` and `ListT` were removed in
+  `mtl-2.3`. Be watchful of this if you build `optics-extra` with `mtl-2.3` (or
+  later) combined with an older version of `transformers` (pre-0.6) that defines
+  `ErrorT` or `ListT`.  Similarly for `Magnify` and `MagnifyMany`.
+
 # optics-0.4.1 (2022-03-22)
 * Add support for GHC-9.2
 * Add `is` ([#410](https://github.com/well-typed/optics/pull/410))
diff --git a/optics.cabal b/optics.cabal
--- a/optics.cabal
+++ b/optics.cabal
@@ -1,6 +1,6 @@
 cabal-version:   2.2
 name:            optics
-version:         0.4.1
+version:         0.4.2
 license:         BSD-3-Clause
 license-file:    LICENSE
 build-type:      Simple
@@ -72,11 +72,11 @@
   build-depends: base                   >= 4.10      && <5
                , array                  >= 0.5.2.0   && <0.6
                , containers             >= 0.5.10.2  && <0.7
-               , mtl                    >= 2.2.2     && <2.3
+               , mtl                    >= 2.2.2     && <2.4
                , optics-core            >= 0.4.1     && <0.4.2
-               , optics-extra           >= 0.4.1     && <0.4.2
+               , optics-extra           >= 0.4.2     && <0.4.3
                , optics-th              >= 0.4.1     && <0.4.2
-               , transformers           >= 0.5       && <0.6
+               , transformers           >= 0.5       && <0.7
 
   -- main module to land with repl
   exposed-modules:    Optics