diff --git a/src/installer.ts b/src/installer.ts
index 193ff16a..8128a7dc 100644
--- a/src/installer.ts
+++ b/src/installer.ts
@@ -116,9 +116,9 @@ export async function getNode(
           `Received HTTP status code ${err.httpStatusCode}.  This usually indicates the rate limit has been exceeded`
         );
       } else {
-        core.info(err.message);
+        core.info((err as Error).message);
       }
-      core.debug(err.stack);
+      core.debug((err as Error).stack!);
       core.info('Falling back to download directly from Node');
     }
 
@@ -334,7 +334,7 @@ async function resolveVersionFromManifest(
     return info?.resolvedVersion;
   } catch (err) {
     core.info('Unable to resolve version from manifest...');
-    core.debug(err.message);
+    core.debug((err as Error).message);
   }
 }