diff --git a/upload_box_to_vagrantcloud.sh b/upload_box_to_vagrantcloud.sh
index b33f8469..b87e6d7d 100755
--- a/upload_box_to_vagrantcloud.sh
+++ b/upload_box_to_vagrantcloud.sh
@@ -152,7 +152,15 @@ cmdline() {
   esac
 
   echo -e "*** ${NAME} | ${SHORT_DESCRIPTION}"
-  vagrant cloud publish --force --description "$LONG_DESCRIPTION" --version-description "$LONG_DESCRIPTION" --release  --short-description "${SHORT_DESCRIPTION}" "${VAGRANT_CLOUD_USER}/${NAME}" "${BOX_VERSION}" "${VAGRANT_PROVIDER}" "${VAGRANT_CLOUD_BOX_FILE}"
+  CHECKSUM_BOX_FILE=$(sha256sum "${VAGRANT_CLOUD_BOX_FILE}" | cut -d ' ' -f 1)
+  CHECKSUM_BOX_VAGRANT_CLOUD=$(curl -s "https://app.vagrantup.com/${VAGRANT_CLOUD_USER}/boxes/${NAME}" | jq -r ".versions[] | select (.version == \"${BOX_VERSION}\") .providers[] | select (.name == \"${VAGRANT_PROVIDER}\") .checksum")
+
+  if [ "${CHECKSUM_BOX_FILE}" != "${CHECKSUM_BOX_VAGRANT_CLOUD}" ]; then
+    vagrant cloud publish --force --description "$LONG_DESCRIPTION" --version-description "$LONG_DESCRIPTION" --release  --short-description "${SHORT_DESCRIPTION}" --checksum-type sha256 --checksum "${CHECKSUM_BOX_FILE}" "${VAGRANT_CLOUD_USER}/${NAME}" "${BOX_VERSION}" "${VAGRANT_PROVIDER}" "${VAGRANT_CLOUD_BOX_FILE}"
+  else
+    echo "*** Box '${NAME}' with version '${BOX_VERSION}', provider '${VAGRANT_PROVIDER}' and checksum '${CHECKSUM_BOX_FILE}' already exists."
+    echo "*** Skipping upload..."
+  fi
 }