diff --git a/lib/utils/get-dependencies.js b/lib/utils/get-dependencies.js
index 47af2c4..9ac3443 100644
--- a/lib/utils/get-dependencies.js
+++ b/lib/utils/get-dependencies.js
@@ -8,6 +8,7 @@ const path = require('path');
  * @param {Object} obj - Object with parameters.
  * @param {string} [obj.dir=''] - Path to directory.
  * @returns {PackageJson} - Contects of package.json from the provided directory.
+ * @throws {Error} - When unable to find package.json.
  */
 function getDependencies({ dir = '' }) {
   return require(path.join(dir, 'package.json'));
diff --git a/lib/utils/get-latest-tag.js b/lib/utils/get-latest-tag.js
index b4eaf77..8353002 100644
--- a/lib/utils/get-latest-tag.js
+++ b/lib/utils/get-latest-tag.js
@@ -10,7 +10,7 @@ const execAsync = promisify(exec);
  *
  * @param {string} name - Package name.
  * @returns {Promise<StandardOutput>} - Return latest version, if latest tag exists.
- * @throws {Error} - Output failed JSON parse.
+ * @throws {Error} - When package name is invalid.
  */
 function getLatestTag(name) {
   return execAsync(`npm view ${name} dist-tags --json`);
diff --git a/lib/utils/get-latest-versions.js b/lib/utils/get-latest-versions.js
index e43d79a..e14000c 100644
--- a/lib/utils/get-latest-versions.js
+++ b/lib/utils/get-latest-versions.js
@@ -10,7 +10,7 @@ const execAsync = promisify(exec);
  *
  * @param {string} name - Package name.
  * @returns {Promise<StandardOutput>} - List of available versions.
- * @throws {Error} - Output failed JSON parse.
+ * @throws {Error} - When package name is invalid.
  */
 function getLatestVersions(name) {
   return execAsync(`npm view ${name} versions --json`);
diff --git a/lib/utils/install-dev-packages.js b/lib/utils/install-dev-packages.js
index 19b298d..18a7438 100644
--- a/lib/utils/install-dev-packages.js
+++ b/lib/utils/install-dev-packages.js
@@ -10,6 +10,7 @@ const execAsync = promisify(exec);
  *
  * @param {string} pkgs - list of packages.
  * @returns {Promise<StandardOutput>} - Standard output.
+ * @throws {Error} - When unable to install development package.
  */
 function installDevPackages(pkgs) {
   return execAsync(`npm i -D ${pkgs}`);
diff --git a/lib/utils/install-packages.js b/lib/utils/install-packages.js
index b82510c..a44e9bc 100644
--- a/lib/utils/install-packages.js
+++ b/lib/utils/install-packages.js
@@ -10,6 +10,7 @@ const execAsync = promisify(exec);
  *
  * @param {string} pkgs - list of packages.
  * @returns {Promise<StandardOutput>} - Standard output.
+ * @throws {Error} - When unable to install the package.
  */
 function installPackages(pkgs) {
   return execAsync(`npm i ${pkgs}`);