diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Revision history for smash-aeson
 
+## 0.2.0.1 -- 2022-04-03
+
+* Update `base` bounds to allow GHC 9.2.x
+
+## 0.2.0.0 -- 2022-04-02
+
+* Update `aeson` bounds to `>=2.0 && <2.1`
+
 ## 0.1.0.0 -- YYYY-mm-dd
 
 * First version. Released on an unsuspecting world.
diff --git a/smash-aeson.cabal b/smash-aeson.cabal
--- a/smash-aeson.cabal
+++ b/smash-aeson.cabal
@@ -1,37 +1,40 @@
-cabal-version:       2.0
-
-
-name:                smash-aeson
-version:             0.1.0.0
-synopsis:            Aeson support for the smash library
-description:
-  Aeson support for the `smash` library
-homepage:            https://github.com/emilypi/smash
-bug-reports:         https://github.com/emilypi/smash/issues
-license:             BSD3
-license-file:        LICENSE
-author:              Emily Pillmore
-maintainer:          emilypi@cohomolo.gy
-copyright:           (c) 2020 Emily Pillmore <emilypi@cohomolo.gy>
-category:            Data
-build-type:          Simple
+cabal-version:      2.0
+name:               smash-aeson
+version:            0.2.0.1
+synopsis:           Aeson support for the smash library
+description:        Aeson support for the `smash` library
+homepage:           https://github.com/emilypi/smash
+bug-reports:        https://github.com/emilypi/smash/issues
+license:            BSD3
+license-file:       LICENSE
+author:             Emily Pillmore
+maintainer:         emilypi@cohomolo.gy
+copyright:          (c) 2020-2022 Emily Pillmore <emilypi@cohomolo.gy>
+category:           Data
+build-type:         Simple
 extra-source-files:
   CHANGELOG.md
   README.md
 
 tested-with:
-  GHC ==8.2.2 || ==8.4.3 || ==8.4.4 || ==8.6.3 || ==8.6.5 || ==8.8.3 || ==8.10.1
+  GHC ==8.6.5
+   || ==8.8.4
+   || ==8.10.7
+   || ==9.0.2
+   || ==9.2.2
 
 library
-  exposed-modules:     Data.Can.Aeson
-                     , Data.Smash.Aeson
-                     , Data.Wedge.Aeson
+  exposed-modules:
+    Data.Can.Aeson
+    Data.Smash.Aeson
+    Data.Wedge.Aeson
 
-  build-depends:       base   >=4.10  && <5.0
-                     , aeson ^>=1.4.7
-                     , smash ^>=0.1.1
-                     , unordered-containers
+  build-depends:
+      aeson                 >=2.0   && <2.1
+    , base                  >=4.1  && <4.17
+    , smash                 >=0.1.3
+    , unordered-containers
 
-  hs-source-dirs:      src
-  default-language:    Haskell2010
-  ghc-options:         -Wall
+  hs-source-dirs:   src
+  default-language: Haskell2010
+  ghc-options:      -Wall
diff --git a/src/Data/Can/Aeson.hs b/src/Data/Can/Aeson.hs
--- a/src/Data/Can/Aeson.hs
+++ b/src/Data/Can/Aeson.hs
@@ -3,7 +3,7 @@
 {-# OPTIONS_GHC -fno-warn-orphans #-}
 -- |
 -- Module       : Data.Can.Aeson
--- Copyright    : (c) 2020 Emily Pillmore
+-- Copyright    : (c) 2020-2022 Emily Pillmore
 -- License      : BSD-3-Clause
 --
 -- Maintainer   : Emily Pillmore <emilypi@cohomolo.gy>
@@ -17,7 +17,7 @@
 
 import Data.Aeson
 import Data.Aeson.Encoding (emptyObject_, pair)
-import qualified Data.HashMap.Lazy as HM
+import qualified Data.Aeson.KeyMap as KM
 import Data.Can (Can(..))
 #if __GLASGOW_HASKELL__ < 804
 import Data.Semigroup (Semigroup(..))
@@ -36,7 +36,7 @@
     toEncoding Non = emptyObject_
 
 instance (FromJSON a, FromJSON b) => FromJSON (Can a b) where
-    parseJSON = withObject "Can a b" (go . HM.toList)
+    parseJSON = withObject "Can a b" (go . KM.toList)
       where
         go [("One", a)] = One <$> parseJSON a
         go [("Eno", b)] = Eno <$> parseJSON b
@@ -69,7 +69,7 @@
     liftToEncoding _ _ Non = emptyObject_
 
 instance FromJSON2 Can where
-    liftParseJSON2 f _ g _ = withObject "Can a b" (go . HM.toList)
+    liftParseJSON2 f _ g _ = withObject "Can a b" (go . KM.toList)
       where
         go [] = pure Non
         go [("One", a)] = One <$> f a
@@ -78,7 +78,7 @@
         go _  = fail "Expected either empty object, or 'One' and 'Eno' keys, 'One' or 'Eno' keys only"
 
 instance FromJSON a => FromJSON1 (Can a) where
-    liftParseJSON f _ = withObject "Can a b" (go . HM.toList)
+    liftParseJSON f _ = withObject "Can a b" (go . KM.toList)
       where
         go [] = pure Non
         go [("One", a)] = One <$> parseJSON a
diff --git a/src/Data/Smash/Aeson.hs b/src/Data/Smash/Aeson.hs
--- a/src/Data/Smash/Aeson.hs
+++ b/src/Data/Smash/Aeson.hs
@@ -3,7 +3,7 @@
 {-# OPTIONS_GHC -fno-warn-orphans #-}
 -- |
 -- Module       : Data.Smash.Aeson
--- Copyright    : (c) 2020 Emily Pillmore
+-- Copyright    : (c) 2020-2022 Emily Pillmore
 -- License      : BSD-3-Clause
 --
 -- Maintainer   : Emily Pillmore <emilypi@cohomolo.gy>
@@ -18,7 +18,7 @@
 
 import Data.Aeson
 import Data.Aeson.Encoding (emptyObject_, pair)
-import qualified Data.HashMap.Lazy as HM
+import qualified Data.Aeson.KeyMap as KM
 #if __GLASGOW_HASKELL__ < 804
 import Data.Semigroup (Semigroup(..))
 #endif
@@ -33,7 +33,7 @@
     toEncoding Nada = emptyObject_
 
 instance (FromJSON a, FromJSON b) => FromJSON (Smash a b) where
-    parseJSON = withObject "Smash a b" (go . HM.toList)
+    parseJSON = withObject "Smash a b" (go . KM.toList)
       where
         go [("SmashL", a), ("SmashR", b)] = Smash <$> parseJSON a <*> parseJSON b
         go [] = pure Nada
@@ -56,14 +56,14 @@
     liftToEncoding _ _ Nada = emptyObject_
 
 instance FromJSON2 Smash where
-    liftParseJSON2 f _ g _ = withObject "Smash a b" (go . HM.toList)
+    liftParseJSON2 f _ g _ = withObject "Smash a b" (go . KM.toList)
       where
         go [] = pure Nada
         go [("SmashL", a), ("SmashR", b)] = Smash <$> f a <*> g b
         go _ = fail "Expected either empty object, or a 'Smash' pair"
 
 instance FromJSON a => FromJSON1 (Smash a) where
-    liftParseJSON f _ = withObject "Smash a b" (go . HM.toList)
+    liftParseJSON f _ = withObject "Smash a b" (go . KM.toList)
       where
         go [] = pure Nada
         go [("SmashL", a), ("SmashR", b)] = Smash <$> parseJSON a <*> f b
diff --git a/src/Data/Wedge/Aeson.hs b/src/Data/Wedge/Aeson.hs
--- a/src/Data/Wedge/Aeson.hs
+++ b/src/Data/Wedge/Aeson.hs
@@ -2,7 +2,7 @@
 {-# OPTIONS_GHC -fno-warn-orphans #-}
 -- |
 -- Module       : Data.Wedge.Aeson
--- Copyright    : (c) 2020 Emily Pillmore
+-- Copyright    : (c) 2020-2022 Emily Pillmore
 -- License      : BSD-3-Clause
 --
 -- Maintainer   : Emily Pillmore <emilypi@cohomolo.gy>
@@ -16,7 +16,7 @@
 
 import Data.Aeson
 import Data.Aeson.Encoding (emptyObject_, pair)
-import qualified Data.HashMap.Lazy as HM
+import qualified Data.Aeson.KeyMap as KM
 import Data.Wedge (Wedge(..))
 
 
@@ -30,7 +30,7 @@
     toEncoding Nowhere = emptyObject_
 
 instance (FromJSON a, FromJSON b) => FromJSON (Wedge a b) where
-    parseJSON = withObject "Wedge a b" (go . HM.toList)
+    parseJSON = withObject "Wedge a b" (go . KM.toList)
       where
         go [("Here", a)] = Here <$> parseJSON a
         go [("There", b)] = There <$> parseJSON b
@@ -58,7 +58,7 @@
     liftToEncoding _ _ Nowhere = emptyObject_
 
 instance FromJSON2 Wedge where
-    liftParseJSON2 f _ g _ = withObject "Wedge a b" (go . HM.toList)
+    liftParseJSON2 f _ g _ = withObject "Wedge a b" (go . KM.toList)
       where
         go [] = pure Nowhere
         go [("Here", a)] = Here <$> f a
@@ -66,7 +66,7 @@
         go _  = fail "Expected either empty object, or one with 'Here' or 'There' keys only"
 
 instance FromJSON a => FromJSON1 (Wedge a) where
-    liftParseJSON f _ = withObject "Wedge a b" (go . HM.toList)
+    liftParseJSON f _ = withObject "Wedge a b" (go . KM.toList)
       where
         go [] = pure Nowhere
         go [("Here", a)] = Here <$> parseJSON a