diff --git a/library/PostgresqlSyntax/Extras/HeadedMegaparsec.hs b/library/PostgresqlSyntax/Extras/HeadedMegaparsec.hs
--- a/library/PostgresqlSyntax/Extras/HeadedMegaparsec.hs
+++ b/library/PostgresqlSyntax/Extras/HeadedMegaparsec.hs
@@ -12,7 +12,6 @@
 import qualified Text.Megaparsec.Char as MegaparsecChar
 import qualified Text.Megaparsec.Char.Lexer as MegaparsecLexer
 import qualified Data.Text as Text
-import qualified Text.Builder as TextBuilder
 
 
 {- $setup
diff --git a/library/PostgresqlSyntax/Prelude.hs b/library/PostgresqlSyntax/Prelude.hs
--- a/library/PostgresqlSyntax/Prelude.hs
+++ b/library/PostgresqlSyntax/Prelude.hs
@@ -77,14 +77,6 @@
 import Text.Read as Exports (Read(..), readMaybe, readEither)
 import Unsafe.Coerce as Exports
 
--- contravariant
--------------------------
-import Data.Functor.Contravariant.Divisible as Exports
-
--- selective
--------------------------
-import Control.Selective as Exports
-
 -- bytestring
 -------------------------
 import Data.ByteString as Exports (ByteString)
@@ -93,14 +85,6 @@
 -------------------------
 import Data.Text as Exports (Text)
 
--- containers
--------------------------
-import Data.IntMap.Strict as Exports (IntMap)
-import Data.IntSet as Exports (IntSet)
-import Data.Map.Strict as Exports (Map)
-import Data.Sequence as Exports (Seq)
-import Data.Set as Exports (Set)
-
 -- unordered-containers
 -------------------------
 import Data.HashSet as Exports (HashSet)
@@ -109,14 +93,6 @@
 -- hashable
 -------------------------
 import Data.Hashable as Exports (Hashable)
-
--- foldl
--------------------------
-import Control.Foldl as Exports (Fold(..))
-
--- uuid
--------------------------
-import Data.UUID as Exports (UUID)
 
 -- case-insensitive
 -------------------------
diff --git a/postgresql-syntax.cabal b/postgresql-syntax.cabal
--- a/postgresql-syntax.cabal
+++ b/postgresql-syntax.cabal
@@ -1,5 +1,5 @@
 name: postgresql-syntax
-version: 0.3
+version: 0.3.0.1
 category: Database, PostgreSQL, Parsing
 synopsis: PostgreSQL AST parsing and rendering
 description:
@@ -40,20 +40,14 @@
     base >=4.11 && <5,
     bytestring >=0.10 && <0.11,
     case-insensitive >=1.2 && <2,
-    containers >=0.6 && <0.7,
-    contravariant >=1.5.2 && <2,
     fast-builder >=0.1.2 && <0.2,
-    foldl >=1.4.5 && <2,
     hashable >=1.2 && <2,
     headed-megaparsec >=0.1 && <0.2,
     megaparsec >=7 && <9,
     parser-combinators >=1.1 && <1.3,
-    selective >=0.4 && <0.5,
     text >=1 && <2,
     text-builder >=0.6.6.1 && <0.7,
-    unordered-containers >=0.2.10 && <0.3,
-    uuid >=1.3 && <2,
-    vector >=0.12 && <0.13
+    unordered-containers >=0.2.10 && <0.3
 
 test-suite tasty-test
   type: exitcode-stdio-1.0