diff --git a/scripts/check-package-version.mjs b/scripts/check-package-version.mjs
index 445e480..0a7ea5b 100755
--- a/scripts/check-package-version.mjs
+++ b/scripts/check-package-version.mjs
@@ -46,7 +46,7 @@ console.log(`SK Azure Tools Locked version: ${skAzToolsPackageLock.version}`);
 // Update package.json if --update flag is set
 // or if the version of @slawek/sk-az-tools in package.json
 // is different than the version in package-lock.json.
-if (values.update || skAzToolsPackage.version !== skToolsPackage.version) {
+if (values.update || skAzToolsPackage.version !== skAzToolsPackageLock.version) {
     console.log(`Updating package.json...`);
     skAzToolsPackage.dependencies["@slawek/sk-tools"] = `>=${skToolsPackage.version}`;
     writeFileSync(skAzToolsPackagePath, JSON.stringify(skAzToolsPackage, null, 4));