diff --git a/sci-physics/hepmc/hepmc-3.3.1.ebuild b/sci-physics/hepmc/hepmc-3.3.1.ebuild
index 6bc7e46d86de1..717ff88c7db3d 100644
--- a/sci-physics/hepmc/hepmc-3.3.1.ebuild
+++ b/sci-physics/hepmc/hepmc-3.3.1.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-PYTHON_COMPAT=( python3_{10..13} )
+PYTHON_COMPAT=( python3_{11..13} )
 inherit fortran-2 cmake flag-o-matic python-single-r1
 
 MYP=HepMC3-${PV}
diff --git a/sci-physics/hepmc/hepmc-9999.ebuild b/sci-physics/hepmc/hepmc-9999.ebuild
index 6bc7e46d86de1..717ff88c7db3d 100644
--- a/sci-physics/hepmc/hepmc-9999.ebuild
+++ b/sci-physics/hepmc/hepmc-9999.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-PYTHON_COMPAT=( python3_{10..13} )
+PYTHON_COMPAT=( python3_{11..13} )
 inherit fortran-2 cmake flag-o-matic python-single-r1
 
 MYP=HepMC3-${PV}