diff --git a/dedal/tests/testing_variables.py b/dedal/tests/testing_variables.py
index ab95bfa1e02658b30cef40bd6654915a51d33ad3..e441a2864497edbca5e1f50619befe0c1a90863e 100644
--- a/dedal/tests/testing_variables.py
+++ b/dedal/tests/testing_variables.py
@@ -1,6 +1,6 @@
 import os
 
 ebrains_spack_builds_git = 'https://gitlab.ebrains.eu/ri/tech-hub/platform/esd/ebrains-spack-builds.git'
-SPACK_VERSION = "0.22.0"
+SPACK_VERSION = "0.23.0"
 SPACK_ENV_ACCESS_TOKEN = os.getenv("SPACK_ENV_ACCESS_TOKEN")
 test_spack_env_git = f'https://oauth2:{SPACK_ENV_ACCESS_TOKEN}@gitlab.ebrains.eu/ri/projects-and-initiatives/virtualbraintwin/tools/test-spack-env.git'