diff --git a/sop-java-picocli/src/main/java/sop/cli/picocli/commands/SignCmd.java b/sop-java-picocli/src/main/java/sop/cli/picocli/commands/SignCmd.java
index 7574923..08001e2 100644
--- a/sop-java-picocli/src/main/java/sop/cli/picocli/commands/SignCmd.java
+++ b/sop-java-picocli/src/main/java/sop/cli/picocli/commands/SignCmd.java
@@ -40,6 +40,10 @@ public class SignCmd implements Runnable {
             paramLabel = "KEYS")
     List<File> secretKeyFile = new ArrayList<>();
 
+    @CommandLine.Option(names = "--with-key-password", description = "Password(s) to unlock the secret key(s) with",
+            paramLabel = "PASSWORD")
+    List<String> withKeyPassword = new ArrayList<>();
+
     @CommandLine.Option(names = "--micalg-out", description = "Emits the digest algorithm used to the specified file in a way that can be used to populate the micalg parameter for the PGP/MIME Content-Type (RFC3156)",
             paramLabel = "MICALG")
     File micAlgOut;
@@ -70,6 +74,10 @@ public class SignCmd implements Runnable {
             System.exit(19);
         }
 
+        for (String password : withKeyPassword) {
+            sign.withKeyPassword(password);
+        }
+
         for (File keyFile : secretKeyFile) {
             try (FileInputStream keyIn = new FileInputStream(keyFile)) {
                 sign.key(keyIn);