diff --git a/eic-spack.sh b/eic-spack.sh
index 5aa8dcb6b374218a592ef26ff08e9907fddd9468..3b4304ffb22a7c3067ba6c3fbb4978a3020f308d 100644
--- a/eic-spack.sh
+++ b/eic-spack.sh
@@ -3,7 +3,7 @@ EICSPACK_ORGREPO="eic/eic-spack"
 
 ## EIC spack commit hash or github version, e.g. v0.19.7
 ## note: nightly builds could use a branch e.g. releases/v0.19
-EICSPACK_VERSION="ad33251135b154690a0bf408e81dda293a0097e0"
+EICSPACK_VERSION="c0da90347ee66d2744fcee905d8e49e58a639782"
 
 ## Space-separated list of eic-spack cherry-picks
 read -r -d '' EICSPACK_CHERRYPICKS <<- \
diff --git a/spack-environment/packages.yaml b/spack-environment/packages.yaml
index 15007fd3e3dd51cdd4c9bef40683004d3538334c..b226775c7ee1b28cda353bbbb1d21ad196fe32c5 100644
--- a/spack-environment/packages.yaml
+++ b/spack-environment/packages.yaml
@@ -84,7 +84,7 @@ packages:
     - '@656aa3192b097a631ddd1e0380e80c26fd6644a7'
   edm4eic:
     require:
-    - '@6.0.0' # EDM4EIC_VERSION
+    - '@5.0.0' # EDM4EIC_VERSION
     - cxxstd=20
   edm4hep:
     require: