diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 000000000..fdb159a38
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,12 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [0.13.0](https://github.com/TimelyDataflow/differential-dataflow/compare/differential-dataflow-v0.12.0...differential-dataflow-v0.13.0) - 2024-10-29
+
+Changelog bankruptcy declared.
diff --git a/Cargo.toml b/Cargo.toml
index 3d4e39211..03e62168d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 
 name = "differential-dataflow"
-version = "0.12.0"
+version = "0.13.0"
 authors = ["Frank McSherry <fmcsherry@me.com>"]
 
 description = "An incremental data-parallel dataflow platform"
diff --git a/dogsdogsdogs/CHANGELOG.md b/dogsdogsdogs/CHANGELOG.md
new file mode 100644
index 000000000..0f0b48000
--- /dev/null
+++ b/dogsdogsdogs/CHANGELOG.md
@@ -0,0 +1,12 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [0.1.0](https://github.com/TimelyDataflow/differential-dataflow/releases/tag/differential-dogs3-v0.1.0) - 2024-10-29
+
+Changelog bankruptcy declared.