diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 9056ea7..15d95d1 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -23,7 +23,7 @@ jobs:
       run: |
         gox \
         -osarch="darwin/arm64 darwin/amd64 windows/amd64 linux/amd64" \
-        -output="outputs/{{.OS}}/{{.Arch}}/{{.Dir}}"
+        -output="outputs/{{.OS}}/{{.Dir}}-{{.Arch}}"
     
     - name: Create release
       id: create_release
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..ead9ef5
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,10 @@
+# Contributing guide
+
+(This is mostly for my own reference.)
+
+## How to publish a new version
+
+```sh
+git tag v1.0.0
+git push origin --tags
+```