diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..4a5d2ed
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,5 @@
+# Contributing
+
+Please send pull requests against the `develop` branch.
+
+The `master` branch and `a.b.c` tags are used for releases which are hooked with Docker Hub.