diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..e1f954e
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,5 @@
+# Changelog
+
+## [Unreleased]
+- Start tracking changes in `CHANGELOG.md`
+
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 703b01d..d917535 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -119,6 +119,12 @@ to run them all. This will run:
 
 This is the same set of tests that is run on our CI system, Travis.
 
+### Updating CHANGELOG.md
+
+If your patch makes a change that would be visible or interesting to a
+user of SourceCred—for example, fixing a bug—please add a description of
+the change under the `[Unreleased]` heading of `CHANGELOG.md`.
+
 ## When writing commit messages
 
 ### Summary of changes