diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index f571a77..aa8719c 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -10,25 +10,16 @@ on:
 
 jobs:
   Build:
-    runs-on: [self-hosted, docker]
+    runs-on: ubuntu-latest
     permissions:
       checks: write
     timeout-minutes: 30
-    container:
-      image:  ghcr.io/project-tsurugi/oltp-sandbox:latest
-      credentials:
-        username: ${{ github.repository_owner }}
-        password: ${{ secrets.GHCR_PAT }}
-      volumes:
-        - ${{ vars.gradle_cache_dir }}:/root/.gradle
     defaults:
       run:
         shell: bash
         working-directory: java/cost-accounting-benchmark
     env:
       JAVA_TOOL_OPTIONS: -Dfile.encoding=UTF8
-      GPR_USER: ${{ github.repository_owner }}
-      GPR_KEY: ${{ secrets.GHCR_PAT }}
 
     steps:
       - name: Setup_Java
diff --git a/java/cost-accounting-benchmark/build.gradle b/java/cost-accounting-benchmark/build.gradle
index 4b70894..21a9194 100755
--- a/java/cost-accounting-benchmark/build.gradle
+++ b/java/cost-accounting-benchmark/build.gradle
@@ -12,24 +12,16 @@ if (hasProperty('mavenLocal')) {
 } else {
     repositories {
         maven {
-            url 'https://maven.pkg.github.com/project-tsurugi/*'
+            url 'https://s01.oss.sonatype.org/content/repositories/snapshots/'
             content {
                 includeGroupByRegex 'com\\.tsurugidb.*'
             }
-            credentials {
-                username findProperty('gpr.user') ?: System.getenv('GPR_USER')
-                password findProperty('gpr.key') ?: System.getenv('GPR_KEY')
-            }
         }
     }
 }
 
 repositories {
-    mavenCentral {
-        content {
-            excludeGroupByRegex 'com\\.tsurugidb.*'
-        }
-    }
+    mavenCentral()
 }
 
 configurations.all {