diff --git a/Web/Scotty/Internal/Types.hs b/Web/Scotty/Internal/Types.hs
index 73b6a0f..d0e3571 100644
--- a/Web/Scotty/Internal/Types.hs
+++ b/Web/Scotty/Internal/Types.hs
@@ -29,7 +29,6 @@ import qualified Control.Monad.Trans.Resource as RT (InternalState, InvalidAcces
 
 import qualified Data.ByteString as BS
 import qualified Data.ByteString.Lazy.Char8 as LBS8 (ByteString)
-import           Data.Default.Class (Default, def)
 import           Data.String (IsString(..))
 import qualified Data.Text as T (Text, pack)
 import           Data.Typeable (Typeable)
@@ -58,18 +57,12 @@ data Options = Options { verbose :: Int -- ^ 0 = silent, 1(def) = startup banner
                                               -- servers using `setFdCacheDuration`.
                        }
 
-instance Default Options where
-  def = defaultOptions
-
 defaultOptions :: Options
 defaultOptions = Options 1 W.defaultSettings
 
 newtype RouteOptions = RouteOptions { maxRequestBodySize :: Maybe Kilobytes -- max allowed request size in KB
                                     }
 
-instance Default RouteOptions where
-    def = defaultRouteOptions
-
 defaultRouteOptions :: RouteOptions
 defaultRouteOptions = RouteOptions Nothing
 
@@ -100,9 +93,6 @@ data ScottyState m =
                 , routeOptions :: RouteOptions
                 }
 
--- instance Default (ScottyState m) where
---   def = defaultScottyState
-
 defaultScottyState :: ScottyState m
 defaultScottyState = ScottyState [] [] Nothing defaultRouteOptions
 
@@ -231,8 +221,6 @@ setHeaderWith f sr = sr { srHeaders = f (srHeaders sr) }
 setStatus :: Status -> ScottyResponse -> ScottyResponse
 setStatus s sr = sr { srStatus = s }
 
-instance Default ScottyResponse where
-  def = defaultScottyResponse
 
 -- | The default response has code 200 OK and empty body
 defaultScottyResponse :: ScottyResponse
diff --git a/changelog.md b/changelog.md
index 76a00c1..a30badd 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,6 +1,11 @@
 ## next [????.??.??]
 
 
+### Breaking changes
+* Remove dependency on data-default class (#386). We have been exporting constants for default config values since 0.20, and this dependency was simply unnecessary.
+
+
+
 ## 0.22 [2024.03.09]
 
 ### New
diff --git a/scotty.cabal b/scotty.cabal
index cc1f9e9..bc85be8 100644
--- a/scotty.cabal
+++ b/scotty.cabal
@@ -76,7 +76,6 @@ Library
                        bytestring            >= 0.10.0.2 ,
                        case-insensitive      >= 1.0.0.1  && < 1.3,
                        cookie                >= 0.4,
-                       data-default-class >= 0.1,
                        exceptions            >= 0.7      && < 0.11,
                        http-types            >= 0.9.1    && < 0.13,
                        monad-control         >= 1.0.0.3  && < 1.1,