diff --git a/packages/opal-x/package.py b/packages/opal-x/package.py
index 166f706..7cef6b8 100644
--- a/packages/opal-x/package.py
+++ b/packages/opal-x/package.py
@@ -51,6 +51,8 @@ class OpalX(CMakePackage, CudaPackage):
     variant("tests", default=False, description="Enable tests")
     variant("alternative_variant", default=False, description="Use alternative variant")
     variant("alpine", default=False, description="Enable Alpine")
+    variant("unit_tests", default=False, description="Build unit tests")
+    variant("ippl_git_tag", default="master", description="IPPL git tag")
 
     depends_on("blas")
     depends_on("boost@1.82.0+mpi+chrono+filesystem+iostreams+regex+serialization+system+timer+python+shared")
@@ -87,7 +89,10 @@ class OpalX(CMakePackage, CudaPackage):
             self.define_from_variant("ENABLE_SOLVERS", "solvers"),
             self.define_from_variant("ENABLE_TESTS", "tests"),
             self.define_from_variant("USE_ALTERNATIVE_VARIANT", "alternative_variant"),
+            self.define_from_variant("ENABLE_ALPINE", "alpine"),
+            self.define_from_variant("ENABLE_UNIT_TESTS", "unit_tests"),
             "-DIPPL_GIT_TAG=opalx-fielddump",
+            "-DKokkos_ENABLE_IMPL_CUDA_MALLOC_ASYNC=OFF",
         ]
 
         if '+cuda' in self.spec: