diff --git a/spring-core/src/main/java/org/springframework/util/SocketUtils.java b/spring-core/src/main/java/org/springframework/util/SocketUtils.java
index 4362e94e1995..557173e7e59c 100644
--- a/spring-core/src/main/java/org/springframework/util/SocketUtils.java
+++ b/spring-core/src/main/java/org/springframework/util/SocketUtils.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -54,7 +54,7 @@ public class SocketUtils {
 	public static final int PORT_RANGE_MAX = 65535;
 
 
-	private static final Random random = new Random(System.currentTimeMillis());
+	private static final Random random = new Random(System.nanoTime());
 
 
 	/**