diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index ac16273347e9..625912d25f71 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -2476,8 +2476,6 @@ self: super: {
   # https://github.com/kuribas/mfsolve/issues/8
   mfsolve = dontCheck super.mfsolve;
 
-  knob = appendPatch ./patches/knob-ghc9.patch super.knob;
-
   # compatibility with random-fu 0.3 https://github.com/mokus0/misfortune/pull/5
   misfortune = appendPatch ./patches/misfortune-ghc9.patch (overrideCabal (drv: {
     revision = null;
diff --git a/pkgs/development/haskell-modules/configuration-ghc-9.2.x.nix b/pkgs/development/haskell-modules/configuration-ghc-9.2.x.nix
index 1633f01b875b..a82849d9aed9 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-9.2.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-9.2.x.nix
@@ -61,8 +61,6 @@ self: super: {
   # Tests fail in GHC 9.2
   extra = dontCheck super.extra;
 
-  knob = appendPatch ./patches/knob-ghc9.patch super.knob;
-
   # Jailbreaks & Version Updates
 
   # This `doJailbreak` can be removed once we have doctest v0.20
diff --git a/pkgs/development/haskell-modules/patches/knob-ghc9.patch b/pkgs/development/haskell-modules/patches/knob-ghc9.patch
deleted file mode 100644
index 9316f1c29d31..000000000000
--- a/pkgs/development/haskell-modules/patches/knob-ghc9.patch
+++ /dev/null
@@ -1,62 +0,0 @@
-diff --git a/knob.cabal b/knob.cabal
-index a8abae0..45bd5c7 100644
---- a/knob.cabal
-+++ b/knob.cabal
-@@ -52,7 +52,7 @@ library
-   ghc-options: -Wall -O2
- 
-   build-depends:
--      base >= 4.2 && < 4.15
-+      base >= 4.2 && < 5
-     , bytestring >= 0.9
-     , transformers >= 0.2
- 
-diff --git a/lib/Data/Knob.hs b/lib/Data/Knob.hs
-index fa87ad2..f01d0a7 100644
---- a/lib/Data/Knob.hs
-+++ b/lib/Data/Knob.hs
-@@ -1,4 +1,4 @@
--{-# LANGUAGE DeriveDataTypeable #-}
-+{-# LANGUAGE DeriveDataTypeable, DeriveAnyClass #-}
- 
- -- |
- -- Module: Data.Knob
-@@ -58,7 +58,7 @@ import qualified System.IO as IO
- newtype Knob = Knob (MVar.MVar ByteString)
- 
- data Device = Device IO.IOMode (MVar.MVar ByteString) (MVar.MVar Int)
--	deriving (Typeable)
-+	deriving (Typeable, IO.RawIO)
- 
- instance IO.IODevice Device where
- 	ready _ _ _ = return True
-@@ -68,21 +68,21 @@ instance IO.IODevice Device where
- 	
- 	seek (Device _ _ var) IO.AbsoluteSeek off = do
- 		checkOffset off
--		MVar.modifyMVar_ var (\_ -> return (fromInteger off))
--	
-+		MVar.modifyMVar var (\_ -> return (fromInteger off, off))
-+
- 	seek (Device _ _ var) IO.RelativeSeek off = do
--		MVar.modifyMVar_ var (\old_off -> do
-+		MVar.modifyMVar var (\old_off -> do
- 			let new_off = toInteger old_off + off
- 			checkOffset new_off
--			return (fromInteger new_off))
--	
-+			return (fromInteger new_off, new_off))
-+
- 	seek dev@(Device _ _ off_var) IO.SeekFromEnd off = do
--		MVar.modifyMVar_ off_var (\_ -> do
-+		MVar.modifyMVar off_var (\_ -> do
- 			size <- IO.getSize dev
- 			let new_off = size + off
- 			checkOffset new_off
--			return (fromInteger new_off))
--	
-+			return (fromInteger new_off, new_off))
-+
- 	tell (Device _ _ var) = fmap toInteger (MVar.readMVar var)
- 	getSize (Device _ var _) = do
- 		bytes <- MVar.readMVar var