diff --git a/.github/dependabot.yml b/.github/dependabot.yml
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--- /dev/null
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@@ -0,0 +1,17 @@
+# Dependabot configuration file
+# <https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file>
+#
+# Each ecosystem is checked on a scheduled interval defined below.  To trigger
+# a check manually, go to
+#
+#   https://github.com/nextstrain/ingest/network/updates
+#
+# and look for a "Check for updates" button.  You may need to click around a
+# bit first.
+---
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"