diff --git a/spack-environment/dev/spack.yaml b/spack-environment/dev/spack.yaml
index 52ae95d7abeb9ea7fb60a223ad1ec2e60321b8e8..c80c6c2d78f7bbf2c0e15e285120dd80dae46e75 100644
--- a/spack-environment/dev/spack.yaml
+++ b/spack-environment/dev/spack.yaml
@@ -37,6 +37,7 @@ spack:
     - irt
     - iwyu
     - jana2
+    - k4fwcore
     - lcov
     - lhapdf
     - madx
diff --git a/spack-environment/packages.yaml b/spack-environment/packages.yaml
index 1086d1f11b25781620c5dc85a728884a4d0ae53b..74917141bde3808cb49301ed285ba9689319b899 100644
--- a/spack-environment/packages.yaml
+++ b/spack-environment/packages.yaml
@@ -149,6 +149,9 @@ packages:
     require:
     - '@2.1.2'
     - -ipo +podio +root +zmq
+  k4fwcore:
+    require:
+    - '@1.0pre17'
   lcov:
     require:
     - '@1.16'