diff --git a/build.sbt b/build.sbt
index a57531eb9..f05d5bd00 100644
--- a/build.sbt
+++ b/build.sbt
@@ -15,7 +15,7 @@ inThisBuild(List(
   )
 ))
 
-val coursierVersion0 = "2.0.0-RC2-3"
+val coursierVersion0 = "2.0.0-RC2-4"
 
 lazy val `lm-coursier` = project
   // .enablePlugins(ContrabandPlugin)
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/credentials/DirectCredentials.scala b/modules/lm-coursier/src/main/scala/lmcoursier/credentials/DirectCredentials.scala
index 916b340a5..476863e73 100644
--- a/modules/lm-coursier/src/main/scala/lmcoursier/credentials/DirectCredentials.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/credentials/DirectCredentials.scala
@@ -78,12 +78,9 @@ final class DirectCredentials private(
   }
 
   def authentication: Authentication =
-    Authentication(
-      username,
-      password,
-      realmOpt = realm,
-      optional = optional
-    )
+    Authentication(username, password)
+      .withRealm(realm)
+      .withOptional(optional)
 
   def get(): Seq[DirectCredentials] =
     Seq(this)
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 e8f3b2b11..2db5c8968 100644
--- a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/ToCoursier.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/ToCoursier.scala
@@ -24,12 +24,9 @@ object ToCoursier {
     )
 
   def authentication(authentication: Authentication): coursier.core.Authentication =
-    coursier.core.Authentication(
-      authentication.user,
-      authentication.password,
-      authentication.optional,
-      authentication.realmOpt
-    )
+    coursier.core.Authentication(authentication.user, authentication.password)
+      .withOptional(authentication.optional)
+      .withRealm(authentication.realmOpt)
 
   def module(module: Module): coursier.core.Module =
     coursier.core.Module(
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 f35c6ea3d..fc20911bb 100644
--- a/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/ResolutionTasks.scala
+++ b/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/ResolutionTasks.scala
@@ -112,12 +112,9 @@ object ResolutionTasks {
             ivyProperties,
             log,
             authenticationByRepositoryId.get(resolver.name).map { a =>
-              Authentication(
-                a.user,
-                a.password,
-                a.optional,
-                a.realmOpt
-              )
+              Authentication(a.user, a.password)
+                .withOptional(a.optional)
+                .withRealm(a.realmOpt)
             }
           )
         }