diff --git a/spack-environment/packages.yaml b/spack-environment/packages.yaml
index 888bbc48ee6cbfb50087f80f69926f48bd6cf8b7..7498d6c48d2bbc42948e6461a83fbb702f08651d 100644
--- a/spack-environment/packages.yaml
+++ b/spack-environment/packages.yaml
@@ -218,7 +218,7 @@ packages:
     - opengl
   lhapdf:
     require:
-    - '@6.5.1'
+    - '@6.5.4'
     - +python
   madx:
     require: