diff --git a/.jvmopts b/.jvmopts
new file mode 100644
index 0000000..56aefe0
--- /dev/null
+++ b/.jvmopts
@@ -0,0 +1 @@
+-Xmx4G
diff --git a/build.sbt b/build.sbt
index 578e555..1c17e31 100644
--- a/build.sbt
+++ b/build.sbt
@@ -75,7 +75,7 @@ lazy val scalaJava8Compat = (project in file("."))
     scalaModuleMimaPreviousVersion := (CrossVersion.partialVersion(scalaVersion.value) match {
       // pending resolution of https://github.com/scalacenter/sbt-version-policy/issues/62
       case Some((3, _)) => None
-      case _            => Some("0.9.1")
+      case _            => Some("1.0.0-RC1")
     }),
 
     mimaBinaryIssueFilters ++= {