diff --git a/project/JavaOptions.scala b/project/JavaOptions.scala
index 3a4798c086..4b41456101 100644
--- a/project/JavaOptions.scala
+++ b/project/JavaOptions.scala
@@ -66,7 +66,8 @@ object JavaOptions {
         property("file.encoding", "UTF-8"),
         addOpens("java.base", "java.util", "ALL-UNNAMED"),
         addOpens("java.base", "java.lang.invoke", "ALL-UNNAMED"),
-        addOpens("java.base", "java.lang", "ALL-UNNAMED")
+        addOpens("java.base", "java.lang", "ALL-UNNAMED"),
+        addOpens("java.base", "java.nio", "ALL-UNNAMED")
       )
     )
 
diff --git a/scio-core/src/main/scala/com/spotify/scio/runners/dataflow/DataflowContext.scala b/scio-core/src/main/scala/com/spotify/scio/runners/dataflow/DataflowContext.scala
index a3bfddf263..d43bfa63d0 100644
--- a/scio-core/src/main/scala/com/spotify/scio/runners/dataflow/DataflowContext.scala
+++ b/scio-core/src/main/scala/com/spotify/scio/runners/dataflow/DataflowContext.scala
@@ -30,6 +30,9 @@ import scala.jdk.CollectionConverters._
 /** Dataflow runner specific context. */
 case object DataflowContext extends RunnerContext {
 
+  private lazy val JavaMajorVersion: Int =
+    System.getProperty("java.version").stripPrefix("1.").takeWhile(_.isDigit).toInt
+
   override def prepareOptions(options: PipelineOptions, artifacts: List[String]): Unit = {
     val classLoader = classOf[DataflowRunner].getClassLoader
     val dataflowOptions = options.as(classOf[DataflowPipelineWorkerPoolOptions])
@@ -41,15 +44,16 @@ case object DataflowContext extends RunnerContext {
       .filesToStage(options, classLoader, localArtifacts, artifacts)
       .asJavaCollection
 
-    // Required for Kryo w/ Java 17
+    // Required for Kryo w/ Java 17+
     lazy val dataflowPipelineOpts = options.as(classOf[DataflowPipelineOptions])
-    if (
-      sys
-        .props("java.version")
-        .startsWith("17.") && dataflowPipelineOpts.getJdkAddOpenModules == null
-    ) {
+    if (JavaMajorVersion >= 17 && dataflowPipelineOpts.getJdkAddOpenModules == null) {
       dataflowPipelineOpts.setJdkAddOpenModules(
-        List("java.base/java.util=ALL-UNNAMED", "java.base/java.lang.invoke=ALL-UNNAMED").asJava
+        List(
+          "java.base/java.util=ALL-UNNAMED",
+          "java.base/java.lang.invoke=ALL-UNNAMED",
+          "java.base/java.lang=ALL-UNNAMED",
+          "java.base/java.nio=ALL-UNNAMED"
+        ).asJava
       )
     }