diff --git a/task/clamav-scan/0.1/clamav-scan.yaml b/task/clamav-scan/0.1/clamav-scan.yaml
index cd635c0ce2..bfbee93412 100644
--- a/task/clamav-scan/0.1/clamav-scan.yaml
+++ b/task/clamav-scan/0.1/clamav-scan.yaml
@@ -197,10 +197,8 @@ spec:
 
         echo "Selecting auth"
         select-oci-auth $IMAGE_URL > $HOME/auth.json
-        echo "Attaching to ${IMAGE_URL} via the OCI 1.1 Referrers API"
-        oras attach --no-tty --registry-config "$HOME/auth.json" --distribution-spec v1.1-referrers-api --artifact-type application/vnd.clamav "${IMAGE_URL}" "${args[@]}"
-        echo "Attaching to ${IMAGE_URL} via the OCI 1.1 Referrers Tag"
-        oras attach --no-tty --registry-config "$HOME/auth.json" --distribution-spec v1.1-referrers-tag --artifact-type application/vnd.clamav "${IMAGE_URL}" "${args[@]}"
+        echo "Attaching to ${IMAGE_URL}"
+        oras attach --no-tty --registry-config "$HOME/auth.json" --artifact-type application/vnd.clamav "${IMAGE_URL}" "${args[@]}"
       volumeMounts:
         - mountPath: /work
           name: work
diff --git a/task/sast-snyk-check-oci-ta/0.2/sast-snyk-check-oci-ta.yaml b/task/sast-snyk-check-oci-ta/0.2/sast-snyk-check-oci-ta.yaml
index 972c00e4f5..70cc1cbd29 100644
--- a/task/sast-snyk-check-oci-ta/0.2/sast-snyk-check-oci-ta.yaml
+++ b/task/sast-snyk-check-oci-ta/0.2/sast-snyk-check-oci-ta.yaml
@@ -146,7 +146,5 @@ spec:
 
         echo "Selecting auth"
         select-oci-auth $IMAGE_URL >$HOME/auth.json
-        echo "Attaching to ${IMAGE_URL} via the OCI 1.1 Referrers API"
-        oras attach --no-tty --registry-config "$HOME/auth.json" --distribution-spec v1.1-referrers-api --artifact-type "${MEDIA_TYPE}" "${IMAGE_URL}" "${UPLOAD_FILE}:${MEDIA_TYPE}"
-        echo "Attaching to ${IMAGE_URL} via the OCI 1.1 Referrers Tag"
-        oras attach --no-tty --registry-config "$HOME/auth.json" --distribution-spec v1.1-referrers-tag --artifact-type "${MEDIA_TYPE}" "${IMAGE_URL}" "${UPLOAD_FILE}:${MEDIA_TYPE}"
+        echo "Attaching to ${IMAGE_URL}"
+        oras attach --no-tty --registry-config "$HOME/auth.json" --artifact-type "${MEDIA_TYPE}" "${IMAGE_URL}" "${UPLOAD_FILE}:${MEDIA_TYPE}"
diff --git a/task/sast-snyk-check/0.2/sast-snyk-check.yaml b/task/sast-snyk-check/0.2/sast-snyk-check.yaml
index 835e13ec13..4a239e8ca3 100644
--- a/task/sast-snyk-check/0.2/sast-snyk-check.yaml
+++ b/task/sast-snyk-check/0.2/sast-snyk-check.yaml
@@ -122,9 +122,7 @@ spec:
 
         echo "Selecting auth"
         select-oci-auth $IMAGE_URL > $HOME/auth.json
-        echo "Attaching to ${IMAGE_URL} via the OCI 1.1 Referrers API"
-        oras attach --no-tty --registry-config "$HOME/auth.json" --distribution-spec v1.1-referrers-api --artifact-type "${MEDIA_TYPE}" "${IMAGE_URL}" "${UPLOAD_FILE}:${MEDIA_TYPE}"
-        echo "Attaching to ${IMAGE_URL} via the OCI 1.1 Referrers Tag"
-        oras attach --no-tty --registry-config "$HOME/auth.json" --distribution-spec v1.1-referrers-tag --artifact-type "${MEDIA_TYPE}" "${IMAGE_URL}" "${UPLOAD_FILE}:${MEDIA_TYPE}"
+        echo "Attaching to ${IMAGE_URL}"
+        oras attach --no-tty --registry-config "$HOME/auth.json" --artifact-type "${MEDIA_TYPE}" "${IMAGE_URL}" "${UPLOAD_FILE}:${MEDIA_TYPE}"
   workspaces:
   - name: workspace