diff --git a/build.sbt b/build.sbt
index 4d72279e..996e2430 100644
--- a/build.sbt
+++ b/build.sbt
@@ -127,6 +127,11 @@ lazy val msgpackCore = Project(id = "msgpack-core", base = file("msgpack-core"))
         "org.msgpack.value",
         "org.msgpack.value.impl"
       ),
+	OsgiKeys.importPackage :=
+	  Seq(
+        "!android.os",
+        "!sun.*"
+      ),
     testFrameworks += new TestFramework("wvlet.airspec.Framework"),
     Test / javaOptions ++=
       Seq(