diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 9ca612522b..d99e755896 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -9,6 +9,9 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
+      day: "monday"
+      time: "01:00"
+      timezone: "Asia/Tokyo"
     ignore:
       - dependency-name: "*"
         update-types: [ "version-update:semver-major" ]
@@ -24,6 +27,9 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
+      day: "monday"
+      time: "01:00"
+      timezone: "Asia/Tokyo"
 
   - package-ecosystem: "github-actions"
     target-branch: "3"
@@ -34,6 +40,9 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
+      day: "monday"
+      time: "01:00"
+      timezone: "Asia/Tokyo"
 
   - package-ecosystem: "github-actions"
     target-branch: "3.16"
@@ -44,6 +53,9 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
+      day: "monday"
+      time: "01:00"
+      timezone: "Asia/Tokyo"
 
   - package-ecosystem: "github-actions"
     target-branch: "3.15"
@@ -54,6 +66,9 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
+      day: "monday"
+      time: "01:00"
+      timezone: "Asia/Tokyo"
 
   - package-ecosystem: "github-actions"
     target-branch: "3.14"
@@ -64,6 +79,9 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
+      day: "monday"
+      time: "01:00"
+      timezone: "Asia/Tokyo"
 
   - package-ecosystem: "github-actions"
     target-branch: "3.13"
@@ -74,3 +92,6 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
+      day: "monday"
+      time: "01:00"
+      timezone: "Asia/Tokyo"