diff --git a/src/main/java/org/kiwiproject/ansible/vault/OsCommand.java b/src/main/java/org/kiwiproject/ansible/vault/OsCommand.java
deleted file mode 100644
index ab4e1d9f..00000000
--- a/src/main/java/org/kiwiproject/ansible/vault/OsCommand.java
+++ /dev/null
@@ -1,28 +0,0 @@
-package org.kiwiproject.ansible.vault;
-
-import org.kiwiproject.base.KiwiDeprecated;
-
-import java.util.List;
-
-/**
- * Interface that describes a simple contract for an operating system command.
- *
- * @deprecated replaced by {@link org.kiwiproject.base.process.OsCommand}
- */
-@Deprecated(since = "3.1.0", forRemoval = true)
-@KiwiDeprecated(
-        replacedBy = "org.kiwiproject.base.process.OsCommand",
-        reference = "https://github.com/kiwiproject/kiwi/issues/1026",
-        removeAt = "4.0.0"
-)
-public interface OsCommand {
-
-    /**
-     * Returns a list containing the command and all its arguments, which can then be used to construct
-     * a {@link ProcessBuilder}.
-     *
-     * @return a list of command arguments
-     * @see ProcessBuilder#ProcessBuilder(List)
-     */
-    List<String> getCommandParts();
-}