diff --git a/.github/workflows/check-standard.yaml b/.github/workflows/check-standard.yaml
index 088fd25..f35a720 100644
--- a/.github/workflows/check-standard.yaml
+++ b/.github/workflows/check-standard.yaml
@@ -29,31 +29,6 @@ jobs:
       R_KEEP_PKG_SOURCE: yes
 
     steps:
-      - name: Add custom certificate to trusted store
-        if: matrix.config.os == 'ubuntu-latest'
-        run: |
-          sudo apt install --only-upgrade ca-certificates
-          sudo apt install --only-upgrade openssl
-          # Download or access the certificate
-           echo "${{ secrets.CERT_CHAIN }}" > website_cert_chain.pem
-           sudo curl -k https://letsencrypt.org/certs/isrgrootx1.pem.txt -o /usr/local/share/ca-certificates/isrgrootx1.crt
-          sudo curl -k https://letsencrypt.org/certs/letsencryptauthorityx1.pem.txt -o /usr/local/share/ca-certificates/letsencryptauthorityx1.crt
-          sudo curl -k https://letsencrypt.org/certs/letsencryptauthorityx2.pem.txt -o /usr/local/share/ca-certificates/letsencryptauthorityx2.crt
-          sudo curl -k https://letsencrypt.org/certs/lets-encrypt-x1-cross-signed.pem.txt -o /usr/local/share/ca-certificates/letsencryptx1.crt
-          sudo curl -k https://letsencrypt.org/certs/lets-encrypt-x2-cross-signed.pem.txt -o /usr/local/share/ca-certificates/letsencryptx2.crt
-          sudo curl -k https://letsencrypt.org/certs/lets-encrypt-x3-cross-signed.pem.txt -o /usr/local/share/ca-certificates/letsencryptx3.crt
-          sudo curl -k https://letsencrypt.org/certs/lets-encrypt-x4-cross-signed.pem.txt -o /usr/local/share/ca-certificates/letsencryptx4.crt
-
-          sudo dpkg-reconfigure ca-certificates
-  
-          # Add the certificate to the system's trusted certificates
-          sudo cp website_cert_chain.pem /usr/local/share/ca-certificates/website_cert_chain.crt
-          sudo update-ca-certificates
-          sudo dpkg-reconfigure ca-certificates
-          # Verify the certificate is trusted
-          # openssl verify /usr/local/share/ca-certificates/website_cert_chain.crt
-          
-        shell: bash
       
       - uses: actions/checkout@v3