diff --git a/.github/actions/fetch-vectors/action.yml b/.github/actions/fetch-vectors/action.yml
index ccaaf6211969..836fe77fcc6e 100644
--- a/.github/actions/fetch-vectors/action.yml
+++ b/.github/actions/fetch-vectors/action.yml
@@ -17,6 +17,6 @@ runs:
       with:
         repository: "C2SP/x509-limbo"
         path: "x509-limbo"
-        # Latest commit on the x509-limbo main branch, as of Apr 28, 2026.
-        ref: "086b0da8b83d78ed0f491d6df6672b2673406500" # x509-limbo-ref
+        # Latest commit on the x509-limbo main branch, as of May 05, 2026.
+        ref: "5669a4d8097f7f9ecd871a5fbe87fe81e1f0235e" # x509-limbo-ref
         persist-credentials: false