diff --git a/src/amo.ts b/src/amo.ts
index bab56f2..569636b 100644
--- a/src/amo.ts
+++ b/src/amo.ts
@@ -6,21 +6,27 @@ type Compatibility = Record<string, VersionRange> | Array<string>;
 type License =
   | "all-rights-reserved"
   | "MPL-2.0"
-  | "GPL-2.0-or-later"
-  | "GPL-3.0-or-later"
-  | "LGPL-2.1-or-later"
-  | "LGPL-3.0-or-later"
+  | "Apache-2.0"
+  | "GPL-2.0-only"
+  | "GPL-3.0-only"
+  | "LGPL-2.1-only"
+  | "LGPL-3.0-only"
+  | "AGPL-3.0-only"
   | "MIT"
-  | "BSD-2-Clause";
+  | "BSD-2-Clause"
+  | "Unlicense";
 export const LICENSE_NAMES = [
   "all-rights-reserved",
   "MPL-2.0",
-  "GPL-2.0-or-later",
-  "GPL-3.0-or-later",
-  "LGPL-2.1-or-later",
-  "LGPL-3.0-or-later",
+  "Apache-2.0",
+  "GPL-2.0-only",
+  "GPL-3.0-only",
+  "LGPL-2.1-only",
+  "LGPL-3.0-only",
+  "AGPL-3.0-only",
   "MIT",
   "BSD-2-Clause",
+  "Unlicense",
 ];
 export const isLicense = (license: string): license is License => {
   return LICENSE_NAMES.includes(license);
diff --git a/src/index.ts b/src/index.ts
index 9b53d19..0228820 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -28,7 +28,7 @@ async function run(): Promise<void> {
   }
   if (typeof license !== "undefined" && !isLicense(license)) {
     throw new Error(
-      `Invalid license "${license}".  Must be one of: ${Object.keys(
+      `Invalid license "${license}".  Must be one of: ${Object.values(
         LICENSE_NAMES,
       ).join(", ")}`,
     );