diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3dda90c..ab2109b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ The format is based on
 and this project adheres to
 [Haskell Package Versioning Policy](https://pvp.haskell.org/).
 
+## [Unreleased]
+### Changed
+- Remove deprecated 'gql' quasi quoter.
+
 ## [1.4.0.0] - 2024-10-26
 ### Changed
 - `Schema.Directive` is extended to contain a boolean argument, representing
@@ -538,6 +542,7 @@ and this project adheres to
 ### Added
 - Data types for the GraphQL language.
 
+[Unreleased]: https://git.caraus.tech/OSS/graphql/compare/v1.4.0.0...master
 [1.4.0.0]: https://git.caraus.tech/OSS/graphql/compare/v1.3.0.0...v1.4.0.0
 [1.3.0.0]: https://git.caraus.tech/OSS/graphql/compare/v1.2.0.3...v1.3.0.0
 [1.2.0.3]: https://git.caraus.tech/OSS/graphql/compare/v1.2.0.2...v1.2.0.3
diff --git a/graphql.cabal b/graphql.cabal
index 3ee6561..ac9c186 100644
--- a/graphql.cabal
+++ b/graphql.cabal
@@ -40,7 +40,6 @@ library
     Language.GraphQL.Execute
     Language.GraphQL.Execute.Coerce
     Language.GraphQL.Execute.OrderedMap
-    Language.GraphQL.TH
     Language.GraphQL.Type
     Language.GraphQL.Type.In
     Language.GraphQL.Type.Out
@@ -63,7 +62,6 @@ library
     exceptions ^>= 0.10.4,
     megaparsec >= 9.0 && < 10,
     parser-combinators >= 1.3 && < 2,
-    template-haskell >= 2.16 && < 3,
     text >= 1.2 && < 3,
     transformers >= 0.5.6 && < 0.7,
     unordered-containers ^>= 0.2.14,
@@ -84,7 +82,6 @@ test-suite graphql-test
     Language.GraphQL.Execute.CoerceSpec
     Language.GraphQL.Execute.OrderedMapSpec
     Language.GraphQL.ExecuteSpec
-    Language.GraphQL.THSpec
     Language.GraphQL.Type.OutSpec
     Language.GraphQL.Validate.RulesSpec
     Schemas.HeroSchema
diff --git a/src/Language/GraphQL/TH.hs b/src/Language/GraphQL/TH.hs
deleted file mode 100644
index 22ffdd0..0000000
--- a/src/Language/GraphQL/TH.hs
+++ /dev/null
@@ -1,48 +0,0 @@
-{- This Source Code Form is subject to the terms of the Mozilla Public License,
-   v. 2.0. If a copy of the MPL was not distributed with this file, You can
-   obtain one at https://mozilla.org/MPL/2.0/. -}
-
--- | Template Haskell helpers.
-module Language.GraphQL.TH
-    ( gql
-    ) where
-
-import Language.Haskell.TH.Quote (QuasiQuoter(..))
-import Language.Haskell.TH (Exp(..), Lit(..))
-
-stripIndentation :: String -> String
-stripIndentation code = reverse
-    $ dropWhile isLineBreak
-    $ reverse
-    $ unlines
-    $ indent spaces <$> lines' withoutLeadingNewlines
-  where
-    indent 0 xs = xs
-    indent count (' ' : xs) = indent (count - 1) xs
-    indent _ xs = xs
-    withoutLeadingNewlines = dropWhile isLineBreak code
-    spaces = length $ takeWhile (== ' ') withoutLeadingNewlines
-    lines' "" = []
-    lines' string =
-        let (line, rest) = break isLineBreak string
-            reminder =
-                case rest of
-                    [] -> []
-                    '\r' : '\n' : strippedString -> lines' strippedString
-                    _ : strippedString -> lines' strippedString
-         in line : reminder
-    isLineBreak = flip any ['\n', '\r'] . (==)
-
--- | Removes leading and trailing newlines. Indentation of the first line is
--- removed from each line of the string.
-{-# DEPRECATED gql "Use Language.GraphQL.Class.gql from graphql-spice instead" #-}
-gql :: QuasiQuoter
-gql = QuasiQuoter
-    { quoteExp = pure . LitE . StringL . stripIndentation
-    , quotePat = const
-        $ fail "Illegal gql QuasiQuote (allowed as expression only, used as a pattern)"
-    , quoteType = const
-        $ fail "Illegal gql QuasiQuote (allowed as expression only, used as a type)"
-    , quoteDec = const
-        $ fail "Illegal gql QuasiQuote (allowed as expression only, used as a declaration)"
-    }
diff --git a/tests/Language/GraphQL/THSpec.hs b/tests/Language/GraphQL/THSpec.hs
deleted file mode 100644
index 2858ab2..0000000
--- a/tests/Language/GraphQL/THSpec.hs
+++ /dev/null
@@ -1,24 +0,0 @@
-{- This Source Code Form is subject to the terms of the Mozilla Public License,
-   v. 2.0. If a copy of the MPL was not distributed with this file, You can
-   obtain one at https://mozilla.org/MPL/2.0/. -}
-
-{-# LANGUAGE QuasiQuotes #-}
-
-module Language.GraphQL.THSpec
-    ( spec
-    ) where
-
-import Language.GraphQL.TH (gql)
-import Test.Hspec (Spec, describe, it, shouldBe)
-
-spec :: Spec
-spec =
-    describe "gql" $
-        it "replaces CRNL with NL" $
-            let expected = "line1\nline2\nline3"
-                actual = [gql|
-                  line1
-                  line2
-                  line3
-                |]
-             in actual `shouldBe` expected