diff --git a/spack-environment/packages.yaml b/spack-environment/packages.yaml
index 99a2573c66b784a5ed0e3ef5366c1e7a839a0d18..bce0987ceb93b4be887f12799fe8c55ef7e7caab 100644
--- a/spack-environment/packages.yaml
+++ b/spack-environment/packages.yaml
@@ -140,7 +140,7 @@ packages:
     - +expat +pangocairo
   hepmc3:
     require:
-    - '@3.2.6'
+    - '@3.2.7'
     - +python +rootio
   heppdt:
     require:
diff --git a/spack.sh b/spack.sh
index 0888f57326700c7b06dc97e68c8b3ad1e6d35ec7..39e1a670d8c6676bd0fe715fd0fa4b9e1128424b 100644
--- a/spack.sh
+++ b/spack.sh
@@ -33,6 +33,7 @@ d3c796f2ce1da2dda198707def297aeab702d33c
 19c20563cc86140aaf352d72079bd9de292be0ac
 d50f8d7b19e07f25a3ce8de28ff9b352fd926d7f
 9e4fab277b8a5b9ec5587c8a8b6514f12c8042a4
+8f4f691e2b2a6263f661fb0a455bcaf73e90036a
 ---
 ## Optional hash table with comma-separated file list
 read -r -d '' SPACK_CHERRYPICKS_FILES <<- \
@@ -66,3 +67,4 @@ read -r -d '' SPACK_CHERRYPICKS_FILES <<- \
 ## 19c20563cc86140aaf352d72079bd9de292be0ac: Initial License Checkin
 ## d50f8d7b19e07f25a3ce8de28ff9b352fd926d7f: root: sha256 change on latest versions
 ## 9e4fab277b8a5b9ec5587c8a8b6514f12c8042a4: [root] New variants, patches
+## 8f4f691e2b2a6263f661fb0a455bcaf73e90036a: hepmc3: add v3.2.7