diff --git a/var/spack/repos/builtin/packages/vtk/package.py b/var/spack/repos/builtin/packages/vtk/package.py
index e502540ac10..c10e49b0d00 100644
--- a/var/spack/repos/builtin/packages/vtk/package.py
+++ b/var/spack/repos/builtin/packages/vtk/package.py
@@ -93,13 +93,13 @@ class Vtk(CMakePackage):
 
     # Based on PyPI wheel availability
     with when("+python"), default_args(type=("build", "link", "run")):
-        depends_on("python@:3.13")
-        depends_on("python@:3.12", when="@:9.3")
-        depends_on("python@:3.11", when="@:9.2")
-        depends_on("python@:3.10", when="@:9.2.2")
-        depends_on("python@:3.9", when="@:9.1")
-        depends_on("python@:3.8", when="@:9.0.1")
-        depends_on("python@:3.7", when="@:8.2.0")
+        extends("python@:3.13")
+        extends("python@:3.12", when="@:9.3")
+        extends("python@:3.11", when="@:9.2")
+        extends("python@:3.10", when="@:9.2.2")
+        extends("python@:3.9", when="@:9.1")
+        extends("python@:3.8", when="@:9.0.1")
+        extends("python@:3.7", when="@:8.2.0")
 
     # We need mpi4py if buidling python wrappers and using MPI
     depends_on("py-mpi4py", when="+python+mpi", type="run")