diff --git a/src/main/java/com/clevercloud/biscuitpulsar/AuthenticationBiscuit.java b/src/main/java/com/clevercloud/biscuitpulsar/AuthenticationBiscuit.java
index fce4b1b..37fb756 100644
--- a/src/main/java/com/clevercloud/biscuitpulsar/AuthenticationBiscuit.java
+++ b/src/main/java/com/clevercloud/biscuitpulsar/AuthenticationBiscuit.java
@@ -56,7 +56,7 @@ public void configure(String encodedAuthParamString) {
             URI filePath = URI.create(encodedAuthParamString);
             this.biscuitSupplier = () -> {
                 try {
-                    return new String(Files.readAllBytes(Paths.get(filePath)), Charsets.UTF_8).trim();
+                    return Files.readString(Paths.get(filePath), Charsets.UTF_8).trim();
                 } catch (IOException e) {
                     throw new RuntimeException("Failed to read biscuit from file", e);
                 }