diff --git a/.github/actions/fetch-vectors/action.yml b/.github/actions/fetch-vectors/action.yml
index 06864eb41077..3780ee21e422 100644
--- a/.github/actions/fetch-vectors/action.yml
+++ b/.github/actions/fetch-vectors/action.yml
@@ -16,5 +16,5 @@ runs:
       with:
         repository: "C2SP/x509-limbo"
         path: "x509-limbo"
-        # Latest commit on the x509-limbo main branch, as of Sep 17, 2024.
-        ref: "2ea77402d8ef7fbf8765c135f658f311e917ebf7" # x509-limbo-ref
+        # Latest commit on the x509-limbo main branch, as of Sep 18, 2024.
+        ref: "d1478c0a1f98e97ae9c69112259edf3d50c345b6" # x509-limbo-ref