diff --git a/src/index.ts b/src/index.ts
index ff78f0f..4beb23d 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -106,7 +106,7 @@ const createDeployment = async () => {
     const response = await octokit.repos.createDeployment({
         ...context.repo,
         ref: githubDeploymentRef,
-        task: artifactName,
+        task: artifactName || undefined,
         required_contexts: [],
         githubEnvironmentName,
         auto_merge: false,