diff --git a/.github/workflows/ci-master.yml b/.github/workflows/ci-master.yml
index 3d968da..c2c75b1 100644
--- a/.github/workflows/ci-master.yml
+++ b/.github/workflows/ci-master.yml
@@ -61,12 +61,9 @@ jobs:
       run: |
         docker build \
         --tag docker.pkg.github.com/${GITHUB_REPOSITORY}/${ARTIFACT_ID}:${VERSION} \
-        --tag ${TRUSTED_URL}/${TRUSTED_REPOSITORY}/${ARTIFACT_ID}:${VERSION} \
         --tag ${MTR_REPOSITORY}/cwa-testresult-server:${VERSION} \
         .
       env:
-        TRUSTED_URL: ${{ secrets.TRUSTED_URL }}
-        TRUSTED_REPOSITORY: ${{ secrets.TRUSTED_REPOSITORY }}
         MTR_REPOSITORY: ${{ secrets.MTR_REPOSITORY }}
     - name: docker push github
       run: |
@@ -74,27 +71,7 @@ jobs:
         docker push docker.pkg.github.com/${GITHUB_REPOSITORY}/${ARTIFACT_ID}:${VERSION}
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-    - name: docker push trusted
-      run: |
-        echo ${TRUSTED_TOKEN} | docker login ${TRUSTED_URL} -u ${TRUSTED_USER} --password-stdin
-        export DOCKER_CONTENT_TRUST=1
-        export DOCKER_CONTENT_TRUST_SERVER=${TRUSTED_SERVER_URL}
-        export DOCKER_CONTENT_TRUST_ROOT_PASSPHRASE=${TRUSTED_TOKEN}
-        export DOCKER_CONTENT_TRUST_REPOSITORY_PASSPHRASE=${TRUSTED_TOKEN}
-        gpg --quiet --batch --yes --decrypt --passphrase=${TRUSTED_KEY} \
-        --output trusted.key trusted.key.gpg
-        chmod 600 trusted.key
-        docker trust key load trusted.key --name user
-        docker trust sign ${TRUSTED_URL}/${TRUSTED_REPOSITORY}/${ARTIFACT_ID}:${VERSION}
-        docker push ${TRUSTED_URL}/${TRUSTED_REPOSITORY}/${ARTIFACT_ID}:${VERSION}
-      env:
-        TRUSTED_KEY: ${{ secrets.TRUSTED_KEY }}
-        TRUSTED_URL: ${{ secrets.TRUSTED_URL }}
-        TRUSTED_SERVER_URL: ${{ secrets.TRUSTED_SERVER_URL }}
-        TRUSTED_REPOSITORY: ${{ secrets.TRUSTED_REPOSITORY }}
-        TRUSTED_USER: ${{ secrets.TRUSTED_USER }}
-        TRUSTED_TOKEN: ${{ secrets.TRUSTED_TOKEN }}
-    - name: docker push new mtr
+    - name: docker push mtr
       run: |
         echo ${MTR_TOKEN} | docker login ${MTR_REPOSITORY} -u ${MTR_USER} --password-stdin
         docker push ${MTR_REPOSITORY}/cwa-testresult-server:${VERSION}