diff --git a/daemon/src/main/java/org/mvndaemon/mvnd/cli/EnvHelper.java b/daemon/src/main/java/org/mvndaemon/mvnd/cli/EnvHelper.java
index 3ed9e3055..cfb83d81c 100644
--- a/daemon/src/main/java/org/mvndaemon/mvnd/cli/EnvHelper.java
+++ b/daemon/src/main/java/org/mvndaemon/mvnd/cli/EnvHelper.java
@@ -114,7 +114,7 @@ static void chDir(String workingDir) throws Exception {
         // change current dir for the java.io.File class
         Class<?> fileClass = Class.forName("java.io.File");
         if (JavaVersion.getJavaSpec() >= 11.0) {
-            Field fsField = fileClass.getDeclaredField("fs");
+            Field fsField = fileClass.getDeclaredField(JavaVersion.getJavaSpec() >= 21.0 ? "FS" : "fs");
             fsField.setAccessible(true);
             Object fs = fsField.get(null);
             Field userDirField = fs.getClass().getDeclaredField("userDir");