diff --git a/workspaces/libnpmpublish/test/publish.js b/workspaces/libnpmpublish/test/publish.js
index a3355df7417a9..b5bb79f6b9cc7 100644
--- a/workspaces/libnpmpublish/test/publish.js
+++ b/workspaces/libnpmpublish/test/publish.js
@@ -486,7 +486,7 @@ t.test('publish existing package with provenance in gha', async t => {
         // Can't match length because in github actions certain environment
         // variables are present that are not present when running locally,
         // changing the payload size.
-        content_type: 'application/vnd.dev.sigstore.bundle+json;version=0.2',
+        content_type: 'application/vnd.dev.sigstore.bundle.v0.3+json',
       },
     },
   }
@@ -1038,7 +1038,7 @@ t.test('publish existing package with provenance in gitlab', async t => {
         // Can't match length because in github actions certain environment
         // variables are present that are not present when running locally,
         // changing the payload size.
-        content_type: 'application/vnd.dev.sigstore.bundle+json;version=0.2',
+        content_type: 'application/vnd.dev.sigstore.bundle.v0.3+json',
       },
     },
   }