diff --git a/spack-environment/dev/spack.yaml b/spack-environment/dev/spack.yaml
index 3736897b6d9b4da33216e93ccde8a9fa0dab59c3..6c6357eaadee58d87eb9063a062c01a08b9bc13b 100644
--- a/spack-environment/dev/spack.yaml
+++ b/spack-environment/dev/spack.yaml
@@ -43,7 +43,6 @@ spack:
     - lhapdf
     - madx
     - npsim
-    - onnx
     - opencascade
     - osg-ca-certs
     - phonebook-cli
diff --git a/spack-environment/packages.yaml b/spack-environment/packages.yaml
index 6e1ef3a56800369366e34ade5f630b3260bbdecf..26cd99caf30d23da149dea49cbcc82f0cd3f284a 100644
--- a/spack-environment/packages.yaml
+++ b/spack-environment/packages.yaml
@@ -177,9 +177,6 @@ packages:
     - '@1.3.0'
     - +http
     - any_of: [+geocad, -geocad]
-  onnx:
-    require:
-    - '@1.13.1'
   opencascade:
     require:
     - '@7.7.1'