diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 900df32..cf4e427 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -5,3 +5,12 @@ updates:
     directory: "/"
     schedule:
       interval: "daily"
+updates:
+  - package-ecosystem: "gradle"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    allow
+      - dependency-name: "org.embulk:embulk-util-rubytime"
+      - dependency-name: "joda-time:joda-time"
+      - dependency-name: "org.junit*"