diff --git a/src/command-line/index.js b/src/command-line/index.js
index 8a7a7f26..e711e9ec 100644
--- a/src/command-line/index.js
+++ b/src/command-line/index.js
@@ -48,6 +48,7 @@ if (!Helper.config.public && !Helper.config.ldap.enable) {
 
 require("./install");
 require("./uninstall");
+require("./upgrade");
 
 // `parse` expects to be passed `process.argv`, but we need to remove to give it
 // a version of `argv` that does not contain options already parsed by
diff --git a/src/command-line/upgrade.js b/src/command-line/upgrade.js
new file mode 100644
index 00000000..4b540a1d
--- /dev/null
+++ b/src/command-line/upgrade.js
@@ -0,0 +1,66 @@
+"use strict";
+
+const colors = require("chalk");
+const program = require("commander");
+const Helper = require("../helper");
+const Utils = require("./utils");
+
+program
+	.command("upgrade [packages...]")
+	.description("Upgrade installed themes and packages to their latest versions.")
+	.on("--help", Utils.extraHelp)
+	.action(function(packages) {
+		const fs = require("fs");
+		const path = require("path");
+
+		// Get paths to the location of packages directory
+		const packagesPath = Helper.getPackagesPath();
+		const packagesConfig = path.join(packagesPath, "package.json");
+		const packagesList = JSON.parse(fs.readFileSync(packagesConfig)).dependencies;
+		const argsList = [
+			"upgrade",
+			"--latest",
+			"--json",
+			"--production",
+			"--ignore-scripts",
+			"--non-interactive",
+			"--cwd",
+			packagesPath,
+		];
+
+		let count = 0;
+
+		// Check if the configuration file exists
+		if (!fs.existsSync(packagesConfig)) {
+			log.warn("There are no packages installed.");
+			return;
+		}
+
+		// If a package names are supplied, check they exist
+		if (packages.length) {
+			log.info("Upgrading the following packages:");
+			packages.forEach((p) => {
+				log.info(`- ${colors.green(p)}`);
+
+				if (packagesList.hasOwnProperty(p)) {
+					argsList.splice(1, 0, p);
+					count++;
+				} else {
+					log.error(`${colors.green(p)} is not installed.`);
+				}
+			});
+		} else {
+			log.info("Upgrading all packages...");
+		}
+
+		if (count === 0 && packages.length) {
+			log.warn("There are not any packages to upgrade.");
+			return;
+		}
+
+		return Utils.executeYarnCommand(...argsList).then(() => {
+			log.info("Package(s) have been successfully upgraded.");
+		}).catch((code) => {
+			throw `Failed to upgrade package(s). Exit code ${code}`;
+		});
+	});