diff --git a/Readme.md b/Readme.md
index da52791..715dd2f 100644
--- a/Readme.md
+++ b/Readme.md
@@ -115,4 +115,3 @@ spago -x test.dhall test
 ## License
 
 This is a fork of [HTTPure](https://github.com/citizennet/purescript-httpure), which is licensed under MIT. See the [original license](./LICENSES/httpure.LICENSE). This work is similarly licensed under [MIT](./License).
-It includes part of [`purescript-record-extra`](https://github.com/justinwoo/purescript-record-extra) as an inline dependency, which is licensed under MIT, see [original license](./LICENSES/record-extra.LICENSE).
diff --git a/packages.dhall b/packages.dhall
index 433d8fd..f082533 100644
--- a/packages.dhall
+++ b/packages.dhall
@@ -1,5 +1,5 @@
 let upstream =
-      https://github.com/purescript/package-sets/releases/download/psc-0.15.4-20220822/packages.dhall
-        sha256:908b4ffbfba37a0a4edf806513a555d0dbcdd0cde7abd621f8d018d2e8ecf828
+      https://github.com/purescript/package-sets/releases/download/psc-0.15.4-20221115/packages.dhall
+        sha256:cc53930f0ebfa5b1652f9e37eb7b1c424246ca78db3c7baf0b205e740e0e9e4e
 
 in  upstream
diff --git a/spago.dhall b/spago.dhall
index c451861..60eb29e 100644
--- a/spago.dhall
+++ b/spago.dhall
@@ -29,6 +29,7 @@
   , "prelude"
   , "profunctor"
   , "record"
+  , "record-studio"
   , "refs"
   , "routing-duplex"
   , "safe-coerce"
diff --git a/src/HTTPurple/Record/Extra.js b/src/HTTPurple/Record/Extra.js
deleted file mode 100644
index c7506d8..0000000
--- a/src/HTTPurple/Record/Extra.js
+++ /dev/null
@@ -1,8 +0,0 @@
-
-export const pickFn = function(ks, r) {
-    var copy = {};
-    for(var i = 0; i < ks.length; i++) {
-        copy[ks[i]] = r[ks[i]];
-    }
-    return copy;
-  };
diff --git a/src/HTTPurple/Record/Extra.purs b/src/HTTPurple/Record/Extra.purs
deleted file mode 100644
index fca3979..0000000
--- a/src/HTTPurple/Record/Extra.purs
+++ /dev/null
@@ -1,49 +0,0 @@
-module HTTPurple.Record.Extra where
-
-import Prelude
-
-import Data.Array (fromFoldable)
-import Data.Function.Uncurried (Fn2, runFn2)
-import Data.List (List, (:))
-import Data.Symbol (class IsSymbol, reflectSymbol)
-import Prim.Row as Row
-import Prim.RowList as RL
-import Type.Proxy (Proxy(..))
-
-class Keys (xs :: RL.RowList Type) where
-  keysImpl :: Proxy xs -> List String
-
-instance Keys RL.Nil where
-  keysImpl _ = mempty
-
-instance
-  ( IsSymbol name
-  , Keys tail
-  ) =>
-  Keys (RL.Cons name ty tail) where
-  keysImpl _ = first : rest
-    where
-    first = reflectSymbol (Proxy :: _ name)
-    rest = keysImpl (Proxy :: _ tail)
-
-keys ::
-  forall g row rl.
-  RL.RowToList row rl =>
-  Keys rl =>
-  g row -- this will work for any type with the row as a param!
-    ->
-  List String
-keys _ = keysImpl (Proxy :: _ rl)
-
-foreign import pickFn :: forall r1 r2. Fn2 (Array String) (Record r1) (Record r2)
-
-pick ::
-  forall a r b l.
-  Row.Union b r a =>
-  RL.RowToList b l =>
-  Keys l =>
-  Record a ->
-  Record b
-pick = runFn2 pickFn ks
-  where
-  ks = fromFoldable $ keys (Proxy :: _ b)
diff --git a/src/HTTPurple/Request.purs b/src/HTTPurple/Request.purs
index 8ca853f..be31174 100644
--- a/src/HTTPurple/Request.purs
+++ b/src/HTTPurple/Request.purs
@@ -29,8 +29,6 @@ import HTTPurple.Path (Path)
 import HTTPurple.Path (read) as Path
 import HTTPurple.Query (Query)
 import HTTPurple.Query (read) as Query
-import HTTPurple.Record.Extra (pick)
-import HTTPurple.Record.Extra as Extra
 import HTTPurple.Utils (encodeURIComponent)
 import HTTPurple.Version (Version)
 import HTTPurple.Version (read) as Version
@@ -39,6 +37,8 @@ import Node.HTTP (requestURL)
 import Prim.Row (class Nub, class Union)
 import Prim.RowList (class RowToList)
 import Record (merge)
+import Record.Studio (shrink)
+import Record.Studio.Keys (class Keys)
 import Routing.Duplex as RD
 import Type.Prelude (Proxy)
 import Unsafe.Coerce (unsafeCoerce)
@@ -110,7 +110,7 @@ fromHTTPRequestExt ::
   Union ctx thru ctx =>
   Nub (RequestR route ctx) (RequestR route ctx) =>
   RowToList ctx ctxRL =>
-  Extra.Keys ctxRL =>
+  Keys ctx =>
   RD.RouteDuplex' route ->
   Proxy ctx ->
   HTTP.Request ->
@@ -118,7 +118,7 @@ fromHTTPRequestExt ::
 fromHTTPRequestExt route _ nodeRequest = do
   let
     extension :: Record ctx
-    extension = pick (unsafeCoerce nodeRequest :: Record ctx)
+    extension = shrink (unsafeCoerce nodeRequest :: Record ctx)
 
     addExtension :: Request route -> ExtRequestNT route ctx
     addExtension = flip merge extension >>> ExtRequestNT
diff --git a/src/HTTPurple/Server.purs b/src/HTTPurple/Server.purs
index ba89b5f..9313ec6 100644
--- a/src/HTTPurple/Server.purs
+++ b/src/HTTPurple/Server.purs
@@ -28,7 +28,6 @@ import Effect.Class.Console (log)
 import Effect.Console (error)
 import Effect.Exception (Error)
 import HTTPurple.NodeMiddleware (MiddlewareResult(..), NextInvocation(..), NodeMiddlewareStack(..))
-import HTTPurple.Record.Extra as Extra
 import HTTPurple.Request (ExtRequest, ExtRequestNT, Request, RequestR, fromHTTPRequestExt, fromHTTPRequestUnit)
 import HTTPurple.Response (Response, ResponseM, internalServerError, notFound, send)
 import Justifill (justifill)
@@ -44,6 +43,7 @@ import Node.Process (onSignal)
 import Prim.Row (class Nub, class Union)
 import Prim.RowList (class RowToList)
 import Record (merge)
+import Record.Studio.Keys (class Keys, class KeysRL)
 import Routing.Duplex as RD
 import Safe.Coerce (coerce)
 import Type.Prelude (Proxy(..))
@@ -121,7 +121,7 @@ handleExtRequest ::
   forall ctx ctxRL thru route.
   Union ctx thru ctx =>
   RowToList ctx ctxRL =>
-  Extra.Keys ctxRL =>
+  Keys ctx =>
   Nub (RequestR route ctx) (RequestR route ctx) =>
   { route :: RD.RouteDuplex' route
   , router :: ExtRequestNT route ctx -> ResponseM
@@ -139,7 +139,7 @@ handleRequest ::
   forall ctx ctxRL thru route.
   Union ctx thru ctx =>
   RowToList ctx ctxRL =>
-  Extra.Keys ctxRL =>
+  Keys ctx =>
   Nub (RequestR route ctx) (RequestR route ctx) =>
   { route :: RD.RouteDuplex' route
   , router :: ExtRequestNT route ctx -> ResponseM
@@ -154,7 +154,7 @@ handleExtRequestWithMiddleware ::
   forall input output outputRL thru route.
   Union output thru output =>
   RowToList output outputRL =>
-  Extra.Keys outputRL =>
+  Keys output =>
   Nub (RequestR route output) (RequestR route output) =>
   { route :: RD.RouteDuplex' route
   , nodeMiddleware :: NodeMiddlewareStack input output
@@ -196,7 +196,7 @@ serveInternal ::
   JustifiableFields fromRL from () via =>
   Union output thru output =>
   RowToList output outputRL =>
-  Extra.Keys outputRL =>
+  KeysRL outputRL =>
   Nub (RequestR route output) (RequestR route output) =>
   { | from } ->
   Maybe (NodeMiddlewareStack input output) ->
@@ -263,7 +263,7 @@ serveNodeMiddleware ::
   JustifiableFields fromRL from () via =>
   Union output thru output =>
   RowToList output outputRL =>
-  Extra.Keys outputRL =>
+  KeysRL outputRL =>
   Nub (RequestR route output) (RequestR route output) =>
   { | from } ->
   ExtRoutingSettings route input output ->