diff --git a/sop-java-picocli/src/main/java/sop/cli/picocli/commands/VersionCmd.java b/sop-java-picocli/src/main/java/sop/cli/picocli/commands/VersionCmd.java
deleted file mode 100644
index 6ccb8f7..0000000
--- a/sop-java-picocli/src/main/java/sop/cli/picocli/commands/VersionCmd.java
+++ /dev/null
@@ -1,58 +0,0 @@
-// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
-//
-// SPDX-License-Identifier: Apache-2.0
-
-package sop.cli.picocli.commands;
-
-import picocli.CommandLine;
-import sop.cli.picocli.Print;
-import sop.cli.picocli.SopCLI;
-import sop.exception.SOPGPException;
-import sop.operation.Version;
-
-@CommandLine.Command(name = "version", resourceBundle = "msg_version",
-        exitCodeOnInvalidInput = SOPGPException.UnsupportedOption.EXIT_CODE)
-public class VersionCmd extends AbstractSopCmd {
-
-    @CommandLine.ArgGroup()
-    Exclusive exclusive;
-
-    static class Exclusive {
-        @CommandLine.Option(names = "--extended")
-        boolean extended;
-
-        @CommandLine.Option(names = "--backend")
-        boolean backend;
-
-        @CommandLine.Option(names = "--sop-spec")
-        boolean sopSpec;
-    }
-
-
-
-    @Override
-    public void run() {
-        Version version = throwIfUnsupportedSubcommand(
-                SopCLI.getSop().version(), "version");
-
-        if (exclusive == null) {
-            Print.outln(version.getName() + " " + version.getVersion());
-            return;
-        }
-
-        if (exclusive.extended) {
-            Print.outln(version.getExtendedVersion());
-            return;
-        }
-
-        if (exclusive.backend) {
-            Print.outln(version.getBackendVersion());
-            return;
-        }
-
-        if (exclusive.sopSpec) {
-            Print.outln(version.getSopSpecVersion());
-            return;
-        }
-    }
-}
diff --git a/sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/VersionCmd.kt b/sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/VersionCmd.kt
new file mode 100644
index 0000000..75197fe
--- /dev/null
+++ b/sop-java-picocli/src/main/kotlin/sop/cli/picocli/commands/VersionCmd.kt
@@ -0,0 +1,51 @@
+// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.cli.picocli.commands
+
+import picocli.CommandLine.ArgGroup
+import picocli.CommandLine.Command
+import picocli.CommandLine.Option
+import sop.cli.picocli.SopCLI
+import sop.exception.SOPGPException
+
+@Command(
+    name = "version",
+    resourceBundle = "msg_version",
+    exitCodeOnInvalidInput = SOPGPException.UnsupportedOption.EXIT_CODE)
+class VersionCmd : AbstractSopCmd() {
+
+    @ArgGroup var exclusive: Exclusive? = null
+
+    class Exclusive {
+        @Option(names = ["--extended"]) var extended: Boolean = false
+        @Option(names = ["--backend"]) var backend: Boolean = false
+        @Option(names = ["--sop-spec"]) var sopSpec: Boolean = false
+    }
+
+    override fun run() {
+        val version = throwIfUnsupportedSubcommand(SopCLI.getSop().version(), "version")
+
+        if (exclusive == null) {
+            // No option provided
+            println("${version.getName()} ${version.getVersion()}")
+            return
+        }
+
+        if (exclusive!!.extended) {
+            println(version.getExtendedVersion())
+            return
+        }
+
+        if (exclusive!!.backend) {
+            println(version.getBackendVersion())
+            return
+        }
+
+        if (exclusive!!.sopSpec) {
+            println(version.getSopSpecVersion())
+            return
+        }
+    }
+}