diff --git a/build.sbt b/build.sbt
index f59529599..c1fbace0a 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1057,6 +1057,7 @@ lazy val mainProj = (project in file("main"))
       exclude[DirectMissingMethodProblem]("sbt.Defaults.earlyArtifactPathSetting"),
       exclude[MissingClassProblem]("sbt.internal.server.BuildServerReporter$"),
       exclude[IncompatibleTemplateDefProblem]("sbt.internal.server.BuildServerReporter"),
+      exclude[MissingClassProblem]("sbt.internal.CustomHttp*"),
     )
   )
   .configure(
diff --git a/main/src/main/scala/sbt/Defaults.scala b/main/src/main/scala/sbt/Defaults.scala
index 82724a3b5..8f10c9dba 100644
--- a/main/src/main/scala/sbt/Defaults.scala
+++ b/main/src/main/scala/sbt/Defaults.scala
@@ -43,7 +43,7 @@ import sbt.internal.librarymanagement.mavenint.{
   PomExtraDependencyAttributes,
   SbtPomExtraProperties
 }
-import sbt.internal.librarymanagement.{ CustomHttp => _, _ }
+import sbt.internal.librarymanagement._
 import sbt.internal.nio.{ CheckBuildSources, Globs }
 import sbt.internal.server.{
   BspCompileProgress,
@@ -258,8 +258,6 @@ object Defaults extends BuildCommon {
       artifactClassifier :== None,
       checksums := Classpaths.bootChecksums(appConfiguration.value),
       conflictManager := ConflictManager.default,
-      CustomHttp.okhttpClientBuilder :== CustomHttp.defaultHttpClientBuilder,
-      CustomHttp.okhttpClient := CustomHttp.okhttpClientBuilder.value.build,
       pomExtra :== NodeSeq.Empty,
       pomPostProcess :== idFun,
       pomAllRepositories :== false,
@@ -2705,7 +2703,7 @@ object Defaults extends BuildCommon {
   def dependencyResolutionTask: Def.Initialize[Task[DependencyResolution]] =
     Def.taskIf {
       if (useCoursier.value) CoursierDependencyResolution(csrConfiguration.value)
-      else IvyDependencyResolution(ivyConfiguration.value, CustomHttp.okhttpClient.value)
+      else IvyDependencyResolution(ivyConfiguration.value)
     }
 }
 
@@ -3129,7 +3127,7 @@ object Classpaths {
       else None
     },
     dependencyResolution := dependencyResolutionTask.value,
-    publisher := IvyPublisher(ivyConfiguration.value, CustomHttp.okhttpClient.value),
+    publisher := IvyPublisher(ivyConfiguration.value),
     ivyConfiguration := mkIvyConfiguration.value,
     ivyConfigurations := {
       val confs = thisProject.value.configurations
@@ -3432,7 +3430,7 @@ object Classpaths {
   private[sbt] def ivySbt0: Initialize[Task[IvySbt]] =
     Def.task {
       Credentials.register(credentials.value, streams.value.log)
-      new IvySbt(ivyConfiguration.value, CustomHttp.okhttpClient.value)
+      new IvySbt(ivyConfiguration.value)
     }
   def moduleSettings0: Initialize[Task[ModuleSettings]] = Def.task {
     val deps = allDependencies.value.toVector
diff --git a/main/src/main/scala/sbt/Opts.scala b/main/src/main/scala/sbt/Opts.scala
index 720fd0f93..25afca7fd 100644
--- a/main/src/main/scala/sbt/Opts.scala
+++ b/main/src/main/scala/sbt/Opts.scala
@@ -41,8 +41,14 @@ object Opts {
   }
   object resolver {
     import sbt.io.syntax._
+    @deprecated("Use sonatypeOssReleases instead", "1.7.0")
     val sonatypeReleases = Resolver.sonatypeRepo("releases")
+    val sonatypeOssReleases = Resolver.sonatypeOssRepos("releases")
+
+    @deprecated("Use sonatypeOssSnapshots instead", "1.7.0")
     val sonatypeSnapshots = Resolver.sonatypeRepo("snapshots")
+    val sonatypeOssSnapshots = Resolver.sonatypeOssRepos("snapshots")
+
     val sonatypeStaging = MavenRepository(
       "sonatype-staging",
       "https://oss.sonatype.org/service/local/staging/deploy/maven2"
diff --git a/main/src/main/scala/sbt/internal/CustomHttp.scala b/main/src/main/scala/sbt/internal/CustomHttp.scala
deleted file mode 100644
index bc9a12ae2..000000000
--- a/main/src/main/scala/sbt/internal/CustomHttp.scala
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * sbt
- * Copyright 2011 - 2018, Lightbend, Inc.
- * Copyright 2008 - 2010, Mark Harrah
- * Licensed under Apache License 2.0 (see LICENSE)
- */
-
-package sbt.internal
-
-import sbt.internal.librarymanagement.{ CustomHttp => LMCustomHttp }
-import okhttp3._
-
-import sbt.BuildSyntax._
-import sbt.KeyRanks._
-
-object CustomHttp {
-  val okhttpClientBuilder =
-    settingKey[OkHttpClient.Builder]("Builder for the HTTP client.").withRank(CSetting)
-  val okhttpClient =
-    settingKey[OkHttpClient]("HTTP client used for library management.").withRank(CSetting)
-
-  def defaultHttpClientBuilder: OkHttpClient.Builder = {
-    LMCustomHttp.defaultHttpClientBuilder
-  }
-}
diff --git a/main/src/main/scala/sbt/internal/RemoteCache.scala b/main/src/main/scala/sbt/internal/RemoteCache.scala
index 200117de7..58e7b4b9c 100644
--- a/main/src/main/scala/sbt/internal/RemoteCache.scala
+++ b/main/src/main/scala/sbt/internal/RemoteCache.scala
@@ -139,7 +139,7 @@ object RemoteCache {
       ivySbt := {
         Credentials.register(credentials.value, streams.value.log)
         val config0 = ivyConfiguration.value
-        new IvySbt(config0, sbt.internal.CustomHttp.okhttpClient.value)
+        new IvySbt(config0)
       },
     )
   ) ++ inTask(pullRemoteCache)(
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index 535f2e3bb..b84554c9f 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -14,7 +14,7 @@ object Dependencies {
   // sbt modules
   private val ioVersion = nightlyVersion.getOrElse("1.6.0")
   private val lmVersion =
-    sys.props.get("sbt.build.lm.version").orElse(nightlyVersion).getOrElse("1.6.1")
+    sys.props.get("sbt.build.lm.version").orElse(nightlyVersion).getOrElse("1.7.0-M1")
   val zincVersion = nightlyVersion.getOrElse("1.7.0-M2")
 
   private val sbtIO = "org.scala-sbt" %% "io" % ioVersion