diff --git a/spack-environment/dev/spack.yaml b/spack-environment/dev/spack.yaml
index 230fa067a16841aedc5b043e43804ebd4ae1537e..8b1125400eebba63c46cf13782c9cad4172204ec 100644
--- a/spack-environment/dev/spack.yaml
+++ b/spack-environment/dev/spack.yaml
@@ -39,6 +39,7 @@ spack:
   - irt
   - iwyu
   - jana2
+  - k4fwcore
   - lcov
   - lhapdf
   - madx
diff --git a/spack-environment/packages.yaml b/spack-environment/packages.yaml
index e026404b41886c759bd93a015c33207cde29aaa3..039298e2171a8af2cae0a09e50ff3962eff1f4f6 100644
--- a/spack-environment/packages.yaml
+++ b/spack-environment/packages.yaml
@@ -158,6 +158,9 @@ packages:
   juggler:
     require:
     - cxxstd=20
+  k4fwcore:
+    require:
+    - '@1.0pre17'
   lapack:
     require:
     - openblas