diff --git a/spack-environment/dev/spack.yaml b/spack-environment/dev/spack.yaml
index 9390d4f9e29be0100dfb665da03749ce13143880..448e9b048f2ca51dca3299bd6207ef49824da341 100644
--- a/spack-environment/dev/spack.yaml
+++ b/spack-environment/dev/spack.yaml
@@ -46,7 +46,7 @@ spack:
     - opencascade@7.7.1
     - osg-ca-certs@1.109.igtf.1.117
     - phonebook-cli@1.0.0
-    - podio@0.16.5
+    - podio@0.16.5 cxxstd=20
     - prmon@3.0.2 +plot
     - pythia8@8.309 +fastjet
     - python@3.10.10