diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+0.6.2
+---
+* Get rid of `SmsAeroJson` (they have finally fixed their `Content-Type`!). See [5a7539e](https://github.com/GetShopTV/smsaero/commit/5a7539edff7f274d39c58ce02f19bcb14bbc05b5).
+
 0.6.1
 ---
 * Fix `SmsAeroBalance` `ToJSON`/`FromJSON` instances.
diff --git a/smsaero.cabal b/smsaero.cabal
--- a/smsaero.cabal
+++ b/smsaero.cabal
@@ -1,5 +1,5 @@
 name:                smsaero
-version:             0.6.1
+version:             0.6.2
 synopsis:            SMSAero API and HTTP client based on servant library.
 description:         Please see README.md
 homepage:            https://github.com/GetShopTV/smsaero
diff --git a/src/SMSAero/API.hs b/src/SMSAero/API.hs
--- a/src/SMSAero/API.hs
+++ b/src/SMSAero/API.hs
@@ -29,7 +29,6 @@
   PhoneApi,
   BlacklistApi,
   -- * Combinators
-  SmsAeroJson,
   AnswerJson,
   RequireAuth,
   RequiredQueryParam,
@@ -78,18 +77,6 @@
 
 import SMSAero.Types
 
--- | Content type for SMSAero JSON answer (it has JSON body but "text/plain" Content-Type).
-data SmsAeroJson
-
-instance Accept SmsAeroJson where
-  contentType _ = contentType (Proxy :: Proxy PlainText)
-
-instance FromJSON a => MimeUnrender SmsAeroJson a where
-  mimeUnrender _ = mimeUnrender (Proxy :: Proxy JSON)
-
-instance ToJSON a => MimeRender SmsAeroJson a where
-  mimeRender _ = mimeRender (Proxy :: Proxy JSON)
-
 -- | Like 'QueryParam', but always required.
 data RequiredQueryParam (sym :: Symbol) a
 
@@ -156,7 +143,7 @@
       params' = _params action ++ [answerP]
 
 -- | Regular SMSAero GET API.
-type SmsAeroGet a = Get '[SmsAeroJson] (SmsAeroResponse a)
+type SmsAeroGet a = Get '[JSON] (SmsAeroResponse a)
 
 -- | SMSAero API.
 type SMSAeroAPI = RequireAuth :> AnswerJson :>