diff --git a/var/spack/repos/builtin/packages/libristra/package.py b/var/spack/repos/builtin/packages/libristra/package.py
index 74eb576d0b0..0563824e057 100644
--- a/var/spack/repos/builtin/packages/libristra/package.py
+++ b/var/spack/repos/builtin/packages/libristra/package.py
@@ -26,8 +26,8 @@ class Libristra(CMakePackage):
     depends_on("cmake@3.12:")
     depends_on("mpi")
     depends_on("boost@1.70.0: cxxstd=17 +program_options")
-    depends_on("lua@5.3.5~shared", when="~shared_lua")
-    depends_on("lua@5.3.5+shared", when="+shared_lua")
+    depends_on("lua@5.3.5:~shared", when="~shared_lua")
+    depends_on("lua@5.3.5:+shared", when="+shared_lua")
     # TODO: might want to move paraview out of libristra
     depends_on("paraview", when="+paraview")
     # We explicitly depend on gtest and can no longer rely on others for it