diff --git a/docker/CHANGELOG.md b/docker/CHANGELOG.md
new file mode 100644
index 000000000..1dfb1b310
--- /dev/null
+++ b/docker/CHANGELOG.md
@@ -0,0 +1,10 @@
+Changelog
+=========
+
+## ppc-ubuntu
+
+### [1.1] - 2025-08-30
+- Update LLVM version to 21
+
+### [1.0] - 2025-07-28
+- Initial Ubuntu-based image