diff --git a/o/OpenVDB/OpenVDB-9.1.0-intel-2020b-Python-3.8.6.eb b/o/OpenVDB/OpenVDB-9.1.0-intel-2020b-Python-3.8.6.eb
new file mode 100644
index 00000000..fb1eeef1
--- /dev/null
+++ b/o/OpenVDB/OpenVDB-9.1.0-intel-2020b-Python-3.8.6.eb
@@ -0,0 +1,37 @@
+# IT4Innovations 
+# LK 2022
+
+easyblock = 'CMakeMake'
+
+name = 'OpenVDB'
+version = '9.1.0'
+versionsuffix = '-Python-3.8.6'
+
+homepage = 'https://github.com/AcademySoftwareFoundation/openvdb'
+description = """OpenVDB is an open source C++ library comprising a novel hierarchical data structure and a large suite of tools for the efficient storage and manipulation of sparse volumetric data discretized on three-dimensional grids. It was developed by DreamWorks Animation for use in volumetric applications typically encountered in feature film production."""
+
+toolchain = {'name': 'intel', 'version': '2020b'}
+
+source_urls = ['https://github.com/AcademySoftwareFoundation/openvdb/archive/refs/tags/']
+sources = ['v%(version)s.tar.gz']
+checksums = ['914ee417b4607c75c95b53bc73a0599de4157c7d6a32e849e80f24e40fb64181']
+
+
+builddependencies = [
+   ('CMake', '3.20.1')
+]
+
+dependencies = [
+   ('Python', '3.8.6'),
+   ('tbb', '2020.3'),
+   ('Boost', '1.74.0'),
+]
+
+separate_build_dir = True
+
+sanity_check_paths = {
+    'files': ['bin/vdb_print'],
+    'dirs': ['bin', 'include', 'lib', 'lib64']
+}
+
+moduleclass = 'chem'
diff --git a/y/Yambo/Yambo-5.1.0-intel-2021a.eb b/y/Yambo/Yambo-5.1.0-intel-2021a.eb
index 4d56e2d2..7960b6f1 100644
--- a/y/Yambo/Yambo-5.1.0-intel-2021a.eb
+++ b/y/Yambo/Yambo-5.1.0-intel-2021a.eb
@@ -48,6 +48,7 @@ dependencies = [
     ('HDF5', '1.10.7'),
     ('netCDF', '4.8.0'),
     ('netCDF-Fortran', '4.5.3'),
+    ('libxc', '5.1.5'),
 ]
 
 with_configure = True