diff --git a/o/OpenMPI/OpenMPI-4.1.5-GCC-12.3.0.eb b/o/OpenMPI/OpenMPI-4.1.5-GCC-12.3.0.eb
new file mode 100644
index 00000000..f54e9e48
--- /dev/null
+++ b/o/OpenMPI/OpenMPI-4.1.5-GCC-12.3.0.eb
@@ -0,0 +1,62 @@
+name = 'OpenMPI'
+version = '4.1.5'
+
+homepage = 'https://www.open-mpi.org/'
+description = """The Open MPI Project is an open source MPI-3 implementation."""
+
+toolchain = {'name': 'GCC', 'version': '12.3.0'}
+
+source_urls = ['https://www.open-mpi.org/software/ompi/v%(version_major_minor)s/downloads']
+sources = [SOURCELOWER_TAR_BZ2]
+patches = [
+    'OpenMPI-4.1.1_build-with-internal-cuda-header.patch',
+    'OpenMPI-4.1.1_opal-datatype-cuda-performance.patch',
+]
+checksums = [
+    {'openmpi-4.1.5.tar.bz2': 'a640986bc257389dd379886fdae6264c8cfa56bc98b71ce3ae3dfbd8ce61dbe3'},
+    {'OpenMPI-4.1.1_build-with-internal-cuda-header.patch':
+     '63eac52736bdf7644c480362440a7f1f0ae7c7cae47b7565f5635c41793f8c83'},
+    {'OpenMPI-4.1.1_opal-datatype-cuda-performance.patch':
+     'b767c7166cf0b32906132d58de5439c735193c9fd09ec3c5c11db8d5fa68750e'},
+]
+
+builddependencies = [
+    ('pkgconf', '1.9.5'),
+    ('Perl', '5.36.1'),
+    ('Autotools', '20220317'),
+]
+
+dependencies = [
+    ('zlib', '1.2.13'),
+    ('hwloc', '2.9.1'),
+    ('libevent', '2.1.12'),
+    ('UCX', '1.14.1'),
+    ('libfabric', '1.18.0'),
+    ('PMIx', '4.2.4'),
+    ('UCC', '1.2.0'),
+]
+
+# Update configure to include changes from the "internal-cuda" patch
+# by running a subset of autogen.pl sufficient to achieve this
+# without doing the full, long-running regeneration.
+preconfigopts = ' && '.join([
+    'cd config',
+    'autom4te --language=m4sh opal_get_version.m4sh -o opal_get_version.sh',
+    'cd ..',
+    'autoconf',
+    'autoheader',
+    'aclocal',
+    'automake',
+    ''
+])
+
+# CUDA related patches and custom configure option can be removed if CUDA support isn't wanted.
+configopts = '--with-cuda=internal '
+
+# disable MPI1 compatibility for now, see what breaks...
+# configopts += '--enable-mpi1-compatibility '
+
+# to enable SLURM integration (site-specific)
+# configopts += '--with-slurm --with-pmi=/usr/include/slurm --with-pmi-libdir=/usr'
+
+moduleclass = 'mpi'