diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cbfb48e2d973..26b85606dc0c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,6 +29,8 @@ jobs:
           distribution: 'zulu'
           java-version: ${{ matrix.java-version }}
           cache: 'maven'
+      - name: prefetch-polyglot
+        run: mvn org.apache.maven.plugins:maven-dependency-plugin:2.1:get -Dartifact=io.takari.polyglot:polyglot-ruby:0.4.11-SNAPSHOT:get -DrepoUrl=https://oss.sonatype.org/content/repositories/snapshots
       - name: bootstrap
         run: mvn -Pbootstrap clean package
       - name: bundle install