import json

package_path = "package.json"

with open(package_path) as package_file:
    package_data = json.load(package_file)

print("Updating package: " + package_data["displayName"])
print("Starting package version: " + package_data["version"])

package_version_old = package_data["version"]
package_version_split = package_version_old.split(".")
package_version_split[-1] = str(int(package_version_split[-1]) + 1)
package_version_new = ".".join(package_version_split)
package_data["version"] = package_version_new

print("Updated package version: " + package_data["version"])

with open(package_path, 'w') as package_file:
    json.dump(package_data, package_file, indent=4)