diff --git a/spack.yaml b/spack.yaml
index b3e6a1540a9f0106eb4a8bcb175b9e540d4b6bd9..abd3b7c40b91a35a8fd10be8a933befb17610d80 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -27,7 +27,7 @@ spack:
     - pkg-config@0.29.2
     - podio@0.14.1 build_type=RelWithDebInfo
     - pythia8@8.306 +fastjet
-    - python@3.9.12
+    - python@3.10.4
     - py-numpy@1.22.3
     - py-pip@21.3.1
     - py-setuptools@59.4.0