diff --git a/src/main/java/io/zold/api/WalletsIn.java b/src/main/java/io/zold/api/WalletsIn.java
index 82fcced..96a3ec9 100644
--- a/src/main/java/io/zold/api/WalletsIn.java
+++ b/src/main/java/io/zold/api/WalletsIn.java
@@ -8,6 +8,7 @@
 import java.nio.file.FileSystems;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.security.SecureRandom;
 import java.util.Iterator;
 import java.util.Random;
 import org.cactoos.Scalar;
@@ -56,7 +57,7 @@ public WalletsIn(final Path pth) {
         this(
             () -> pth,
             "z",
-            new Random()
+            new SecureRandom()
         );
     }