diff --git a/spack.sh b/spack.sh
index 9ea260c3e0a6355a0670814e05997b091cde3630..fd76c0e7af99140df56776ae906431023000807f 100644
--- a/spack.sh
+++ b/spack.sh
@@ -24,6 +24,7 @@ cec67e69e4065ff33dab7a20df990af19ba5606a
 d129214a8b08d42c5c75792c2ba6e729d3142608
 8d31403860eaaa41d149e9a1c309dfda3b47c0ce
 1bae84ff6e50a28465214b05cc8638990267474b
+8bad5af300f6dc76b559ef65d9dc52527991b840
 ---
 ## Optional hash table with comma-separated file list
 read -r -d '' SPACK_CHERRYPICKS_FILES <<- \
@@ -47,3 +48,4 @@ read -r -d '' SPACK_CHERRYPICKS_FILES <<- \
 ## d129214a8b08d42c5c75792c2ba6e729d3142608: node-js: patch for %gcc@12.[1-2] when @22.2:22
 ## 8d31403860eaaa41d149e9a1c309dfda3b47c0ce: node-js: avoid url patch (serial in common.gypi)
 ## 1bae84ff6e50a28465214b05cc8638990267474b: py-dask: fix py-versioneer version pin
+## 8bad5af300f6dc76b559ef65d9dc52527991b840: py-plac: add v1.4.3; restrict to python@:3.11 for older