diff --git a/var/spack/repos/builtin/packages/dd4hep/package.py b/var/spack/repos/builtin/packages/dd4hep/package.py
index fcd8e23e7a4..3b8667c3f3b 100644
--- a/var/spack/repos/builtin/packages/dd4hep/package.py
+++ b/var/spack/repos/builtin/packages/dd4hep/package.py
@@ -223,6 +223,8 @@ def setup_run_environment(self, env):
         env.set("DD4HEP", self.prefix.examples)
         env.set("DD4hep_DIR", self.prefix)
         env.set("DD4hep_ROOT", self.prefix)
+        env.set("LD_LIBRARY_PATH", self.prefix.lib)
+        env.set("LD_LIBRARY_PATH", self.prefix.lib64)
 
     def url_for_version(self, version):
         # dd4hep releases are dashes and padded with a leading zero