diff --git a/CHANGELOG.md b/CHANGELOG.md
index c65096d..ab2c762 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ SPDX-License-Identifier: Apache-2.0
   - `com.ginsberg:junit5-system-exit` from `1.1.1` to `1.1.2`
   - `org.mockito:mockito-core` from `4.2.0` to `4.3.1`
   - `info.picocli:picocli` from `4.6.2` to `4.6.3`
+- Add hidden `generate-completion` subcommand
 
 ## 1.2.0
 - `encrypt`, `decrypt`: Interpret arguments of `--with-password` and `--with-session-key` as indirect data types (e.g. file references instead of strings)