diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/CoursierConfiguration.scala b/modules/lm-coursier/src/main/scala/lmcoursier/CoursierConfiguration.scala
index c2fe434f7..69a209c67 100644
--- a/modules/lm-coursier/src/main/scala/lmcoursier/CoursierConfiguration.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/CoursierConfiguration.scala
@@ -8,7 +8,7 @@ package lmcoursier
 import java.io.File
 
 import lmcoursier.credentials.Credentials
-import lmcoursier.definitions.{Authentication, CacheLogger, Project}
+import lmcoursier.definitions.{Authentication, CacheLogger, Project, Strict}
 import sbt.librarymanagement.Resolver
 import xsbti.Logger
 
@@ -34,7 +34,8 @@ final class CoursierConfiguration private (
   val logger: Option[CacheLogger],
   val cache: Option[File],
   val ivyHome: Option[File],
-  val followHttpToHttpsRedirections: Option[Boolean]
+  val followHttpToHttpsRedirections: Option[Boolean],
+  val strict: Option[Strict]
 ) extends Serializable {
   
   private def this() =
@@ -60,6 +61,57 @@ final class CoursierConfiguration private (
       None,
       None,
       None,
+      None,
+      None
+    )
+
+  def this(
+    log: Option[Logger],
+    resolvers: Vector[Resolver],
+    parallelDownloads: Int,
+    maxIterations: Int,
+    sbtScalaOrganization: Option[String],
+    sbtScalaVersion: Option[String],
+    sbtScalaJars: Vector[File],
+    interProjectDependencies: Vector[Project],
+    excludeDependencies: Vector[(String, String)],
+    fallbackDependencies: Vector[FallbackDependency],
+    autoScalaLibrary: Boolean,
+    hasClassifiers: Boolean,
+    classifiers: Vector[String],
+    mavenProfiles: Vector[String],
+    scalaOrganization: Option[String],
+    scalaVersion: Option[String],
+    authenticationByRepositoryId: Vector[(String, Authentication)],
+    credentials: Seq[Credentials],
+    logger: Option[CacheLogger],
+    cache: Option[File],
+    ivyHome: Option[File],
+    followHttpToHttpsRedirections: Option[Boolean]
+  ) =
+    this(
+      log,
+      resolvers,
+      parallelDownloads,
+      maxIterations,
+      sbtScalaOrganization,
+      sbtScalaVersion,
+      sbtScalaJars,
+      interProjectDependencies,
+      excludeDependencies,
+      fallbackDependencies,
+      autoScalaLibrary,
+      hasClassifiers,
+      classifiers,
+      mavenProfiles,
+      scalaOrganization,
+      scalaVersion,
+      authenticationByRepositoryId,
+      credentials,
+      logger,
+      cache,
+      ivyHome,
+      followHttpToHttpsRedirections,
       None
     )
   
@@ -87,7 +139,8 @@ final class CoursierConfiguration private (
           logger == other.logger &&
           cache == other.cache &&
           ivyHome == other.ivyHome &&
-          followHttpToHttpsRedirections == other.followHttpToHttpsRedirections
+          followHttpToHttpsRedirections == other.followHttpToHttpsRedirections &&
+          strict == other.strict
       case _ => false
     }
 
@@ -115,11 +168,12 @@ final class CoursierConfiguration private (
     code = 37 * (code + cache.##)
     code = 37 * (code + ivyHome.##)
     code = 37 * (code + followHttpToHttpsRedirections.##)
+    code = 37 * (code + strict.##)
     code
   }
 
   override def toString: String =
-    s"CoursierConfiguration($log, $resolvers, $parallelDownloads, $maxIterations, $sbtScalaOrganization, $sbtScalaVersion, $sbtScalaJars, $interProjectDependencies, $excludeDependencies, $fallbackDependencies, $autoScalaLibrary, $hasClassifiers, $classifiers, $mavenProfiles, $scalaOrganization, $scalaVersion, $authenticationByRepositoryId, $credentials, $logger, $cache, $ivyHome, $followHttpToHttpsRedirections)"
+    s"CoursierConfiguration($log, $resolvers, $parallelDownloads, $maxIterations, $sbtScalaOrganization, $sbtScalaVersion, $sbtScalaJars, $interProjectDependencies, $excludeDependencies, $fallbackDependencies, $autoScalaLibrary, $hasClassifiers, $classifiers, $mavenProfiles, $scalaOrganization, $scalaVersion, $authenticationByRepositoryId, $credentials, $logger, $cache, $ivyHome, $followHttpToHttpsRedirections, $strict)"
 
   private[this] def copy(
     log: Option[Logger] = log,
@@ -143,7 +197,8 @@ final class CoursierConfiguration private (
     logger: Option[CacheLogger] = logger,
     cache: Option[File] = cache,
     ivyHome: Option[File] = ivyHome,
-    followHttpToHttpsRedirections: Option[Boolean] = followHttpToHttpsRedirections
+    followHttpToHttpsRedirections: Option[Boolean] = followHttpToHttpsRedirections,
+    strict: Option[Strict] = strict
   ): CoursierConfiguration =
     new CoursierConfiguration(
       log,
@@ -167,7 +222,8 @@ final class CoursierConfiguration private (
       logger,
       cache,
       ivyHome,
-      followHttpToHttpsRedirections
+      followHttpToHttpsRedirections,
+      strict
     )
 
   def withLog(log: Option[Logger]): CoursierConfiguration =
@@ -262,6 +318,11 @@ final class CoursierConfiguration private (
     copy(followHttpToHttpsRedirections = Some(followHttpToHttpsRedirections))
   def withFollowHttpToHttpsRedirections(): CoursierConfiguration =
     copy(followHttpToHttpsRedirections = Some(true))
+
+  def withStrict(strict: Strict): CoursierConfiguration =
+    copy(strict = Some(strict))
+  def withStrict(strictOpt: Option[Strict]): CoursierConfiguration =
+    copy(strict = strictOpt)
 }
 
 object CoursierConfiguration {
@@ -313,6 +374,7 @@ object CoursierConfiguration {
       logger, 
       cache,
       None,
+      None,
       None
     )
   
@@ -360,6 +422,7 @@ object CoursierConfiguration {
       Option(logger), 
       Option(cache),
       None,
+      None,
       None
     )
 
@@ -408,6 +471,7 @@ object CoursierConfiguration {
       logger,
       cache,
       ivyHome,
+      None,
       None
     )
 }
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/CoursierDependencyResolution.scala b/modules/lm-coursier/src/main/scala/lmcoursier/CoursierDependencyResolution.scala
index 3aa0c2622..69c440b20 100644
--- a/modules/lm-coursier/src/main/scala/lmcoursier/CoursierDependencyResolution.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/CoursierDependencyResolution.scala
@@ -142,7 +142,8 @@ class CoursierDependencyResolution(conf: CoursierConfiguration) extends Dependen
         .withMaxIterations(conf.maxIterations)
         .withProfiles(conf.mavenProfiles.toSet)
         .withForceVersion(Map.empty)
-        .withTypelevel(typelevel)
+        .withTypelevel(typelevel),
+      strictOpt = conf.strict.map(ToCoursier.strict)
     )
 
     def artifactsParams(resolutions: Map[Set[Configuration], Resolution]): ArtifactsParams =
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Strict.scala b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Strict.scala
new file mode 100644
index 000000000..c1ea79afc
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Strict.scala
@@ -0,0 +1,55 @@
+package lmcoursier.definitions
+
+final class Strict private (
+  val include: Set[(String, String)],
+  val exclude: Set[(String, String)],
+  val ignoreIfForcedVersion: Boolean
+) {
+
+  override def equals(obj: Any): Boolean =
+    obj match {
+      case other: Strict =>
+        include == other.include &&
+          exclude == other.exclude &&
+          ignoreIfForcedVersion == other.ignoreIfForcedVersion
+      case _ =>
+        false
+    }
+
+  override def hashCode(): Int = {
+    var code = 17 + "lmcoursier.definitions.Strict".##
+    code = 37 * code + include.##
+    code = 37 * code + exclude.##
+    code = 37 * code + ignoreIfForcedVersion.##
+    37 * code
+  }
+
+  override def toString: String =
+    s"Strict($include, $exclude, $ignoreIfForcedVersion)"
+
+  private def copy(
+    include: Set[(String, String)] = include,
+    exclude: Set[(String, String)] = exclude,
+    ignoreIfForcedVersion: Boolean = ignoreIfForcedVersion
+  ): Strict =
+    new Strict(include, exclude, ignoreIfForcedVersion)
+
+
+  def withInclude(include: Set[(String, String)]): Strict =
+    copy(include = include)
+  def addInclude(include: (String, String)*): Strict =
+    copy(include = this.include ++ include)
+
+  def withExclude(exclude: Set[(String, String)]): Strict =
+    copy(exclude = exclude)
+  def addExclude(exclude: (String, String)*): Strict =
+    copy(exclude = this.exclude ++ exclude)
+
+  def withIgnoreIfForcedVersion(ignoreIfForcedVersion: Boolean): Strict =
+    copy(ignoreIfForcedVersion = ignoreIfForcedVersion)
+}
+
+object Strict {
+  def apply(): Strict =
+    new Strict(Set(("*", "*")), Set.empty, ignoreIfForcedVersion = true)
+}
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/ToCoursier.scala b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/ToCoursier.scala
index 2db5c8968..46cb67bf0 100644
--- a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/ToCoursier.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/ToCoursier.scala
@@ -1,5 +1,6 @@
 package lmcoursier.definitions
 
+import coursier.util.ModuleMatcher
 import lmcoursier.credentials.{Credentials, DirectCredentials, FileCredentials}
 
 // TODO Make private[lmcoursier]
@@ -142,4 +143,15 @@ object ToCoursier {
         logger.stop()
     }
 
+  def strict(strict: Strict): coursier.params.rule.Strict =
+    coursier.params.rule.Strict(
+      include = strict.include.map {
+        case (o, n) => ModuleMatcher(coursier.Module(coursier.Organization(o), coursier.ModuleName(n)))
+      },
+      exclude = strict.exclude.map {
+        case (o, n) => ModuleMatcher(coursier.Module(coursier.Organization(o), coursier.ModuleName(n)))
+      },
+      // ignoreIfForcedVersion = strict.ignoreIfForcedVersion // should be around once the coursier version is bumped
+    )
+
 }
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/internal/ResolutionParams.scala b/modules/lm-coursier/src/main/scala/lmcoursier/internal/ResolutionParams.scala
index 2dd3299c2..c71765dfa 100644
--- a/modules/lm-coursier/src/main/scala/lmcoursier/internal/ResolutionParams.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/internal/ResolutionParams.scala
@@ -5,9 +5,10 @@ import java.io.File
 import coursier.cache.{CacheLogger, FileCache}
 import coursier.ProjectCache
 import coursier.core._
+import coursier.params.rule.Strict
 import lmcoursier.FallbackDependency
 import lmcoursier.definitions.ToCoursier
-import coursier.util.{InMemoryRepository, Task}
+import coursier.util.Task
 
 // private[coursier]
 final case class ResolutionParams(
@@ -24,7 +25,8 @@ final case class ResolutionParams(
   loggerOpt: Option[CacheLogger],
   cache: coursier.cache.FileCache[Task],
   parallel: Int,
-  params: coursier.params.ResolutionParams
+  params: coursier.params.ResolutionParams,
+  strictOpt: Option[Strict]
 ) {
 
   val fallbackDependenciesRepositories =
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/internal/ResolutionRun.scala b/modules/lm-coursier/src/main/scala/lmcoursier/internal/ResolutionRun.scala
index 4a7edf6f2..d7b70912c 100644
--- a/modules/lm-coursier/src/main/scala/lmcoursier/internal/ResolutionRun.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/internal/ResolutionRun.scala
@@ -6,6 +6,7 @@ import coursier.cache.loggers.{FallbackRefreshDisplay, ProgressBarRefreshDisplay
 import coursier.core._
 import coursier.ivy.IvyRepository
 import coursier.maven.MavenRepository
+import coursier.params.rule.RuleResolution
 import sbt.util.Logger
 
 // private[coursier]
@@ -18,6 +19,8 @@ object ResolutionRun {
     configs: Set[Configuration]
   ): Either[coursier.error.ResolutionError, Resolution] = {
 
+    val rules = params.strictOpt.map(s => Seq((s, RuleResolution.Fail))).getOrElse(Nil)
+
     val isCompileConfig =
       configs(Configuration.compile) || configs(Configuration("scala-tool"))
 
@@ -81,6 +84,7 @@ object ResolutionRun {
             .withForceScalaVersion(isCompileConfig && params.autoScalaLibOpt.nonEmpty)
             .withScalaVersion(params.autoScalaLibOpt.map(_._2))
             .withTypelevel(params.params.typelevel && isCompileConfig)
+            .withRules(rules)
         )
         .withCache(
           params
diff --git a/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/InputsTasks.scala b/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/InputsTasks.scala
index 8dbe901c9..dc77eeb01 100644
--- a/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/InputsTasks.scala
+++ b/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/InputsTasks.scala
@@ -1,13 +1,13 @@
 package coursier.sbtcoursiershared
 
-import lmcoursier.definitions.{Attributes, Classifier, Configuration, Dependency, Info, Module, ModuleName, Organization, Project, Type}
+import lmcoursier.definitions.{Attributes, Classifier, Configuration, Dependency, Info, Module, ModuleName, Organization, Project, Strict, Type}
 import lmcoursier.{FallbackDependency, FromSbt, Inputs}
 import coursier.sbtcoursiershared.SbtCoursierShared.autoImport._
 import coursier.sbtcoursiershared.Structure._
 import lmcoursier.credentials.DirectCredentials
 import sbt.{Def, SettingKey}
 import sbt.Keys._
-import sbt.librarymanagement.{InclExclRule, ModuleID}
+import sbt.librarymanagement.{ConflictManager, InclExclRule, ModuleID}
 import sbt.util.Logger
 
 import scala.collection.JavaConverters._
@@ -257,4 +257,23 @@ object InputsTasks {
     }
   }
 
+
+  def strictTask = Def.task {
+    val cm = conflictManager.value
+    val log = streams.value.log
+
+    cm.name match {
+      case ConflictManager.latestRevision.name =>
+        None
+      case ConflictManager.strict.name =>
+        val strict = Strict()
+          .withInclude(Set((cm.organization, cm.module)))
+        Some(strict)
+      case other =>
+        log.warn(s"Unsupported conflict manager $other")
+        None
+    }
+  }
+
+
 }
diff --git a/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/ResolutionTasks.scala b/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/ResolutionTasks.scala
index fc20911bb..c0c021352 100644
--- a/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/ResolutionTasks.scala
+++ b/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/ResolutionTasks.scala
@@ -4,14 +4,15 @@ import coursier.ProjectCache
 import coursier.cache.FileCache
 import coursier.core._
 import coursier.internal.Typelevel
-import lmcoursier.definitions.ToCoursier
+import lmcoursier.definitions.{Strict, ToCoursier}
 import lmcoursier.{FallbackDependency, FromSbt}
 import lmcoursier.internal.{InterProjectRepository, ResolutionParams, ResolutionRun, Resolvers}
 import coursier.sbtcoursier.Keys._
-import coursier.sbtcoursiershared.InputsTasks.credentialsTask
+import coursier.sbtcoursiershared.InputsTasks.{credentialsTask, strictTask}
 import coursier.sbtcoursiershared.SbtCoursierShared.autoImport._
 import sbt.Def
 import sbt.Keys._
+import sbt.librarymanagement.ConflictManager
 
 object ResolutionTasks {
 
@@ -100,6 +101,8 @@ object ResolutionTasks {
 
       val credentials = credentialsTask.value.map(ToCoursier.credentials)
 
+      val strictOpt = strictTask.value.map(ToCoursier.strict)
+
       val parentProjectCache: ProjectCache = coursierParentProjectCache.value
         .get(resolvers)
         .map(_.foldLeft[ProjectCache](Map.empty)(_ ++ _))
@@ -144,7 +147,8 @@ object ResolutionTasks {
             .withMaxIterations(maxIterations)
             .withProfiles(userEnabledProfiles)
             .withForceVersion(userForceVersions)
-            .withTypelevel(typelevel)
+            .withTypelevel(typelevel),
+          strictOpt = strictOpt
         ),
         verbosityLevel,
         log
diff --git a/modules/sbt-coursier/src/sbt-test/shared-2/strict-conflict-manager/build.sbt b/modules/sbt-coursier/src/sbt-test/shared-2/strict-conflict-manager/build.sbt
new file mode 100644
index 000000000..051999109
--- /dev/null
+++ b/modules/sbt-coursier/src/sbt-test/shared-2/strict-conflict-manager/build.sbt
@@ -0,0 +1,19 @@
+
+lazy val shared = Seq(
+  scalaVersion := "2.12.8",
+  libraryDependencies ++= Seq(
+    "com.github.alexarchambault" %% "argonaut-shapeless_6.2" % "1.2.0-M4",
+    "com.chuusai" %% "shapeless" % "2.3.3"
+  ),
+  conflictManager := ConflictManager.strict
+)
+
+lazy val a = project
+  .settings(shared)
+
+lazy val b = project
+  .settings(shared)
+  .settings(
+    // strict cm should be fine if we force the conflicting module version
+    dependencyOverrides += "com.chuusai" %% "shapeless" % "2.3.3"
+  )
diff --git a/modules/sbt-coursier/src/sbt-test/shared-2/strict-conflict-manager/project/plugins.sbt b/modules/sbt-coursier/src/sbt-test/shared-2/strict-conflict-manager/project/plugins.sbt
new file mode 100644
index 000000000..71a44ffd3
--- /dev/null
+++ b/modules/sbt-coursier/src/sbt-test/shared-2/strict-conflict-manager/project/plugins.sbt
@@ -0,0 +1,13 @@
+addSbtPlugin {
+
+  val name = sys.props.getOrElse(
+    "plugin.name",
+    sys.error("plugin.name Java property not set")
+  )
+  val version = sys.props.getOrElse(
+    "plugin.version",
+    sys.error("plugin.version Java property not set")
+  )
+
+  "io.get-coursier" % name % version
+}
\ No newline at end of file
diff --git a/modules/sbt-coursier/src/sbt-test/shared-2/strict-conflict-manager/test b/modules/sbt-coursier/src/sbt-test/shared-2/strict-conflict-manager/test
new file mode 100644
index 000000000..4599d10e8
--- /dev/null
+++ b/modules/sbt-coursier/src/sbt-test/shared-2/strict-conflict-manager/test
@@ -0,0 +1,3 @@
+-> a/update
+# enable once when we bump the coursier version
+# > b/update
diff --git a/modules/sbt-lm-coursier/src/main/scala/coursier/sbtlmcoursier/LmCoursierPlugin.scala b/modules/sbt-lm-coursier/src/main/scala/coursier/sbtlmcoursier/LmCoursierPlugin.scala
index 7bc0dd914..87dc2f5e0 100644
--- a/modules/sbt-lm-coursier/src/main/scala/coursier/sbtlmcoursier/LmCoursierPlugin.scala
+++ b/modules/sbt-lm-coursier/src/main/scala/coursier/sbtlmcoursier/LmCoursierPlugin.scala
@@ -2,7 +2,7 @@ package coursier.sbtlmcoursier
 
 import lmcoursier.definitions.Authentication
 import lmcoursier.{CoursierConfiguration, CoursierDependencyResolution, Inputs}
-import coursier.sbtcoursiershared.InputsTasks.credentialsTask
+import coursier.sbtcoursiershared.InputsTasks.{credentialsTask, strictTask}
 import coursier.sbtcoursiershared.{InputsTasks, SbtCoursierShared}
 import sbt.{AutoPlugin, Classpaths, Def, Setting, Task, taskKey}
 import sbt.Project.inTask
@@ -94,6 +94,7 @@ object LmCoursierPlugin extends AutoPlugin {
           Authentication(a.user, a.password, a.optional, a.realmOpt)
         }
         val credentials = credentialsTask.value
+        val strict = strictTask.value
 
         val createLogger = coursierLogger.value
 
@@ -134,6 +135,7 @@ object LmCoursierPlugin extends AutoPlugin {
           .withCache(cache)
           .withLog(s.log)
           .withIvyHome(ivyPaths.value.ivyHome)
+          .withStrict(strict)
       }
     }
   private def mkDependencyResolution: Def.Initialize[Task[DependencyResolution]] =
diff --git a/project/Mima.scala b/project/Mima.scala
index 7326f5eea..14c69b5b2 100644
--- a/project/Mima.scala
+++ b/project/Mima.scala
@@ -37,7 +37,9 @@ object Mima {
 
       Seq(
         // Removed unused method, shouldn't have been there in the first place
-        ProblemFilters.exclude[DirectMissingMethodProblem]("lmcoursier.credentials.DirectCredentials.authentication")
+        ProblemFilters.exclude[DirectMissingMethodProblem]("lmcoursier.credentials.DirectCredentials.authentication"),
+        // ignore shaded and internal stuff related errors
+        (pb: Problem) => pb.matchName.forall(!_.startsWith("lmcoursier.internal."))
       )
     }
   }
@@ -48,9 +50,7 @@ object Mima {
 
       Seq(
         // Should have been put under lmcoursier.internal?
-        (pb: Problem) => pb.matchName.forall(!_.startsWith("lmcoursier.definitions.ToCoursier.")),
-        // ignore shaded and internal stuff related errors
-        (pb: Problem) => pb.matchName.forall(!_.startsWith("lmcoursier.internal."))
+        (pb: Problem) => pb.matchName.forall(!_.startsWith("lmcoursier.definitions.ToCoursier."))
       )
     }
   }