diff --git a/submanifests/optional.yaml b/submanifests/optional.yaml
index f6e0bd8cdfd226..aefc90fb71a4db 100644
--- a/submanifests/optional.yaml
+++ b/submanifests/optional.yaml
@@ -60,7 +60,7 @@ manifest:
         - optional
     - name: zscilib
       path: modules/lib/zscilib
-      revision: ee1b287d9dd07208d2cc52284240ac25bb66eae3
+      revision: pull/63/head
       remote: upstream
       groups:
         - optional