diff --git a/dist/index.js b/dist/index.js
index 3ff39e0..7cbe83e 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -13925,7 +13925,7 @@ class Input {
         return !!(this.owner &&
             this.repo &&
             this.packageName &&
-            this.numOldVersionsToDelete &&
+            this.numOldVersionsToDelete != null &&
             this.token);
     }
 }
diff --git a/src/input.ts b/src/input.ts
index 7bdc2ae..cf4ae51 100644
--- a/src/input.ts
+++ b/src/input.ts
@@ -40,7 +40,7 @@ export class Input {
       this.owner &&
       this.repo &&
       this.packageName &&
-      this.numOldVersionsToDelete &&
+      this.numOldVersionsToDelete != null &&
       this.token
     )
   }