diff --git a/Calamity/Internal/Utils.hs b/Calamity/Internal/Utils.hs
--- a/Calamity/Internal/Utils.hs
+++ b/Calamity/Internal/Utils.hs
@@ -184,7 +184,7 @@
 k .= v = Just (k Aeson..= v)
 
 class CalamityToJSON' a where
-  toPairs :: Aeson.KeyValue kv => a -> [Maybe kv]
+  toPairs :: Aeson.KeyValue v kv => a -> [Maybe kv]
 #else
 (.?=) :: (Aeson.ToJSON v, Aeson.KeyValue kv) => Aeson.Key -> Maybe v -> Maybe kv
 k .?= Just v = Just (k Aeson..= v)
diff --git a/Calamity/Types/Model/Channel/ChannelType.hs b/Calamity/Types/Model/Channel/ChannelType.hs
--- a/Calamity/Types/Model/Channel/ChannelType.hs
+++ b/Calamity/Types/Model/Channel/ChannelType.hs
@@ -28,8 +28,19 @@
 $(makeFieldLabelsNoPrefix ''ChannelType)
 
 instance Aeson.ToJSON ChannelType where
-  toJSON t = Aeson.toJSON (fromEnum t)
-  toEncoding t = Aeson.toEncoding (fromEnum t)
+  toJSON t = Aeson.Number $ case t of
+    GuildTextType -> 0
+    DMType -> 1
+    GuildVoiceType -> 2
+    GroupDMType -> 3
+    GuildCategoryType -> 4
+    GuildNewsType -> 5
+    GuildNewsThreadType -> 10
+    GuildPublicThreadType -> 11
+    GuildPrivateThreadType -> 12
+    GuildStageVoiceType -> 13
+    GuildDirectoryType -> 14
+    GuildForumType -> 15
 
 instance Aeson.FromJSON ChannelType where
   parseJSON = Aeson.withScientific "ChannelType" $ \n -> case toBoundedInteger @Int n of
diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,11 @@
 # Changelog for Calamity
 
+## 0.12.1.0
+
++ Fixed build with Aeson 2.2+ @L0neGamer
++ Fix ToJSON ChannelType instances @MorrowM
++ Bumped crypton-connection bounds from <0.4 to <0.5
+
 ## 0.12.0.0
 
 + Field names in `Calamity.HTTP.Webhook` were mistakenly `username` instead of
diff --git a/calamity.cabal b/calamity.cabal
--- a/calamity.cabal
+++ b/calamity.cabal
@@ -1,6 +1,6 @@
 cabal-version:      2.0
 name:               calamity
-version:            0.12.0.0
+version:            0.12.1.0
 synopsis:           A library for writing discord bots in haskell
 description:
   Please see the README on GitHub at <https://github.com/simmsb/calamity#readme>
@@ -14,7 +14,7 @@
 license:            MIT
 license-file:       LICENSE
 build-type:         Simple
-tested-with:        GHC ==9.6.5
+tested-with:        GHC ==9.6.6
 extra-source-files:
   ChangeLog.md
   README.md
@@ -193,7 +193,7 @@
     , colour                >=2.3.5   && <2.4
     , concurrent-extra      >=0.7     && <0.8
     , containers            >=0.6     && <0.8
-    , crypton-connection    >=0.2.6   && <0.4
+    , crypton-connection    >=0.2.6   && <0.5
     , crypton-x509-system   >=1.6.6   && <1.7
     , data-default-class    >=0.1     && <0.2
     , data-flags            >=0.0.3   && <0.1