diff --git a/core/src/test/scala/com/github/tminglei/slickpg/TypeTagSupportSuite.scala b/core/src/test/scala/com/github/tminglei/slickpg/TypeTagSupportSuite.scala
deleted file mode 100644
index 23dd125a..00000000
--- a/core/src/test/scala/com/github/tminglei/slickpg/TypeTagSupportSuite.scala
+++ /dev/null
@@ -1,23 +0,0 @@
-package com.github.tminglei.slickpg
-
-import izumi.reflect.Tag
-import izumi.reflect.macrortti.LightTypeTag
-import org.scalatest.funsuite.AnyFunSuite
-
-class TypeTagSupportSuite extends AnyFunSuite {
-  case class Foo(x: Int)
-  class Around {
-    case class Inner(y: String)
-  }
-  type AroundInner = Around#Inner
-  def classFromTypeTag(tag: LightTypeTag): Class[_] = {
-    val mungedRef = tag.ref.repr.replace("::", "$")
-    Class.forName(mungedRef)
-  }
-  test("class from type tag") {
-    classFromTypeTag(Tag[String].tag) === classOf[String]
-    classFromTypeTag(Tag[Foo].tag) === classOf[Foo]
-    classFromTypeTag(Tag[Around#Inner].tag) === classOf[Around#Inner]
-    classFromTypeTag(Tag[AroundInner].tag) === classOf[Around#Inner]
-  }
-}