diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..d169f9f
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,31 @@
+version: 2
+updates:
+- package-ecosystem: npm
+  directory: "/"
+  schedule:
+    interval: daily
+    timezone: Asia/Tokyo
+  open-pull-requests-limit: 99
+  reviewers:
+  - nwtgck
+  assignees:
+  - nwtgck
+  ignore:
+  - dependency-name: y18n
+    versions:
+    - 4.0.1
+  - dependency-name: mocha
+    versions:
+    - 8.2.1
+    - 8.3.0
+    - 8.3.1
+  - dependency-name: typescript
+    versions:
+    - 4.1.3
+    - 4.1.4
+    - 4.1.5
+    - 4.2.2
+    - 4.2.3
+  - dependency-name: lodash
+    versions:
+    - 4.17.20