diff --git a/spack-environment/dev/spack.yaml b/spack-environment/dev/spack.yaml
index 6c6357eaadee58d87eb9063a062c01a08b9bc13b..3b3343eb9d31ff949e95713f17a91c8f87a2e8cd 100644
--- a/spack-environment/dev/spack.yaml
+++ b/spack-environment/dev/spack.yaml
@@ -65,7 +65,6 @@ spack:
     - py-mplhep
     - py-htgettoken
     - py-numpy
-    - py-onnx
     - py-onnxruntime
     - py-pandas
     - py-pip
diff --git a/spack-environment/packages.yaml b/spack-environment/packages.yaml
index 26cd99caf30d23da149dea49cbcc82f0cd3f284a..599097e5b49d484ed3afcc773527f86fe83e794a 100644
--- a/spack-environment/packages.yaml
+++ b/spack-environment/packages.yaml
@@ -257,9 +257,6 @@ packages:
   py-numpy:
     require:
     - '@1.23.4'
-  py-onnx:
-    require:
-    - '@1.13.1'
   py-onnxruntime:
     require:
     - '@1.7.2'