diff --git a/toolchains/DumpPlatformClassPath.java b/toolchains/DumpPlatformClassPath.java
index 4707e89..17b014a 100644
--- a/toolchains/DumpPlatformClassPath.java
+++ b/toolchains/DumpPlatformClassPath.java
@@ -187,6 +187,10 @@
         jars.add(path);
       }
     }
+    Path toolsJar = javaHome.resolve("lib/tools.jar");
+    if (Files.exists(toolsJar)) {
+      jars.add(toolsJar);
+    }
     return jars;
   }