diff --git a/core/src/main/scala-3/com/github/tminglei/slickpg/composite/PgCompositeExtensions.scala b/core/src/main/scala-3/com/github/tminglei/slickpg/composite/PgCompositeExtensions.scala
index 04e52248..7a9f4bf7 100644
--- a/core/src/main/scala-3/com/github/tminglei/slickpg/composite/PgCompositeExtensions.scala
+++ b/core/src/main/scala-3/com/github/tminglei/slickpg/composite/PgCompositeExtensions.scala
@@ -1,11 +1,6 @@
 package com.github.tminglei.slickpg.composite
 
-import izumi.reflect.macrortti.LightTypeTag
-import izumi.reflect.Tag
 import slick.jdbc.{JdbcTypesComponent, PostgresProfile}
-import scala.annotation.static
-import scala.collection.concurrent.TrieMap
-import scala.reflect.{classTag, ClassTag}
 
 trait Struct extends AnyRef
 
diff --git a/core/src/main/scala-3/com/github/tminglei/slickpg/utils/TypeConverters.scala b/core/src/main/scala-3/com/github/tminglei/slickpg/utils/TypeConverters.scala
index 7fb8f191..6dcfb7c4 100644
--- a/core/src/main/scala-3/com/github/tminglei/slickpg/utils/TypeConverters.scala
+++ b/core/src/main/scala-3/com/github/tminglei/slickpg/utils/TypeConverters.scala
@@ -1,8 +1,6 @@
 package com.github.tminglei.slickpg
 package utils
 
-import izumi.reflect.{Tag => TTag}
-import izumi.reflect.macrortti.LightTypeTag
 import slick.util.Logging
 import java.sql.{Date, Time, Timestamp}
 import java.time.{LocalDate, LocalDateTime, LocalTime}
@@ -11,9 +9,6 @@ import java.util.UUID
 case class RegisteredTypeConverter[From, To](convert: From => To)
 
 object TypeConverters extends Logging {
-  case class ConvConfig(from: LightTypeTag, to: LightTypeTag, var conv: (_ => _))
-
-  private var convConfigList = List[ConvConfig]()
 
   // register basic converters
   implicit val StringToInt: RegisteredTypeConverter[String, Int] = RegisteredTypeConverter[String, Int](_.toInt)
@@ -51,7 +46,6 @@ object TypeConverters extends Logging {
   implicit val LocalTimeToString: RegisteredTypeConverter[LocalTime, String] = RegisteredTypeConverter(_.toString)
   implicit val LocalDateTimeToString: RegisteredTypeConverter[LocalDateTime, String] = RegisteredTypeConverter(_.toString)
 
-
   def converter[FROM, TO](implicit converter: RegisteredTypeConverter[FROM, TO]): (FROM => TO) = converter.convert
 
   ///
diff --git a/src/main/scala-3/com/github/tminglei/slickpg/PgCompositeSupport.scala b/src/main/scala-3/com/github/tminglei/slickpg/PgCompositeSupport.scala
index da1570cc..d92ac1a2 100644
--- a/src/main/scala-3/com/github/tminglei/slickpg/PgCompositeSupport.scala
+++ b/src/main/scala-3/com/github/tminglei/slickpg/PgCompositeSupport.scala
@@ -1,15 +1,10 @@
 package com.github.tminglei.slickpg
 
-import izumi.reflect.macrortti.LightTypeTag
-import izumi.reflect.{Tag => TTag}
-
 import scala.reflect.{ClassTag, classTag}
 import composite.Struct
 import slick.jdbc.{PositionedResult, PostgresProfile}
 import slick.jdbc.SetParameter
 
-import scala.annotation.unchecked.uncheckedVariance
-import scala.deriving.*
 import scala.compiletime.{error, erasedValue, summonInline, summonFrom}
 import utils.PgTokenHelper._
 import utils.TypeConverters._