diff --git a/src/plugins/mpi/pmix/mpi_pmix.c b/src/plugins/mpi/pmix/mpi_pmix.c

index 69c5191112..1d0080dd77 100644

--- a/src/plugins/mpi/pmix/mpi_pmix.c

+++ b/src/plugins/mpi/pmix/mpi_pmix.c

@@ -87,6 +87,8 @@ const char plugin_type[] = "mpi/pmix_v1";

 const char plugin_type[] = "mpi/pmix_v2";

 #elif (HAVE_PMIX_VER == 3)

 const char plugin_type[] = "mpi/pmix_v3";

+#elif (HAVE_PMIX_VER == 4)

+const char plugin_type[] = "mpi/pmix_v4";

 #endif

 const uint32_t plugin_version = SLURM_VERSION_NUMBER;

@@ -112,8 +114,10 @@ static void *_libpmix_open(void)

 	xstrfmtcat(full_path, "%s/", PMIXP_V2_LIBPATH);

 #elif defined PMIXP_V3_LIBPATH

 	xstrfmtcat(full_path, "%s/", PMIXP_V3_LIBPATH);

+#elif defined PMIXP_V4_LIBPATH

+	xstrfmtcat(full_path, "%s/", PMIXP_V4_LIBPATH);

 #endif

-	xstrfmtcat(full_path, "libpmix.so");

+	xstrfmtcat(full_path, "libpmix.so.2");

 	lib_plug = dlopen(full_path, RTLD_LAZY | RTLD_GLOBAL);

 	xfree(full_path);

diff --git a/src/plugins/mpi/pmix/pmixp_dconn_ucx.c b/src/plugins/mpi/pmix/pmixp_dconn_ucx.c

index 44013246e3..96c40b5c3a 100644

--- a/src/plugins/mpi/pmix/pmixp_dconn_ucx.c

+++ b/src/plugins/mpi/pmix/pmixp_dconn_ucx.c

@@ -169,7 +169,7 @@ static int _load_ucx_lib()

 	 * we have from autoconf

 	 */

 	char *full_path = NULL;

-	xstrfmtcat(full_path, "%s/libucp.so", PMIXP_UCX_LIBPATH);

+	xstrfmtcat(full_path, "%s/libucp.so.0", PMIXP_UCX_LIBPATH);

 	_ucx_lib_handler = dlopen(full_path, RTLD_LAZY | RTLD_GLOBAL);

 	xfree(full_path);

 	if (_ucx_lib_handler) {

@@ -180,7 +180,7 @@ static int _load_ucx_lib()

 	 * known by dynamic linker.

 	 */

 #endif

-	_ucx_lib_handler = dlopen("libucp.so", RTLD_LAZY | RTLD_GLOBAL);

+	_ucx_lib_handler = dlopen("libucp.so.0", RTLD_LAZY | RTLD_GLOBAL);

 	if (!_ucx_lib_handler) {

 		char *err = dlerror();

 		PMIXP_ERROR("Cannot open UCX lib: %s", (err) ? err : "unknown");