diff --git a/mpi.h b/mpi.h
index 6a2f0d4..09a330f 100644
--- a/mpi.h
+++ b/mpi.h
@@ -244,6 +244,7 @@ enum {
     MPI_ERR_VALUE_TOO_LARGE            = 59, /* added: MPI-4.0 */
     MPI_ERR_SESSION                    = 60, /* added: MPI-4.0 */
     MPI_ERR_ERRHANDLER                 = 61, /* added: MPI-4.1 */
+    MPI_ERR_ABI                        = 62, /* added: MPI-5.0 */
 
     MPI_T_ERR_CANNOT_INIT              = 1001,
     MPI_T_ERR_NOT_ACCESSIBLE           = 1002,
@@ -560,8 +561,12 @@ typedef void (MPI_T_event_free_cb_function)(MPI_T_event_registration event_regis
 typedef void (MPI_T_event_dropped_cb_function)(MPI_Count count, MPI_T_event_registration event_registration, int source_index, MPI_T_cb_safety cb_safety, void *user_data);
 
 /* MPI functions */
+int MPI_Abi_get_fortran_booleans(int logical_size, void *logical_true, void *logical_false);
+int MPI_Abi_get_fortran_info(MPI_Info *info);
 int MPI_Abi_get_info(MPI_Info *info);
 int MPI_Abi_get_version(int *abi_major, int *abi_minor);
+int MPI_Abi_set_fortran_booleans(int logical_size, void *logical_true, void *logical_false);
+int MPI_Abi_set_fortran_info(MPI_Info info);
 int MPI_Abort(MPI_Comm comm, int errorcode);
 int MPI_Accumulate(const void *origin_addr, int origin_count, MPI_Datatype origin_datatype, int target_rank, MPI_Aint target_disp, int target_count, MPI_Datatype target_datatype, MPI_Op op, MPI_Win win);
 int MPI_Accumulate_c(const void *origin_addr, MPI_Count origin_count, MPI_Datatype origin_datatype, int target_rank, MPI_Aint target_disp, MPI_Count target_count, MPI_Datatype target_datatype, MPI_Op op, MPI_Win win);
@@ -1226,8 +1231,12 @@ int MPI_T_source_get_num(int *num_sources);
 int MPI_T_source_get_timestamp(int source_index, MPI_Count *timestamp);
 
 /* PMPI functions */
+int PMPI_Abi_get_fortran_booleans(int logical_size, void *logical_true, void *logical_false);
+int PMPI_Abi_get_fortran_info(MPI_Info *info);
 int PMPI_Abi_get_info(MPI_Info *info);
 int PMPI_Abi_get_version(int *abi_major, int *abi_minor);
+int PMPI_Abi_set_fortran_booleans(int logical_size, void *logical_true, void *logical_false);
+int PMPI_Abi_set_fortran_info(MPI_Info info);
 int PMPI_Abort(MPI_Comm comm, int errorcode);
 int PMPI_Accumulate(const void *origin_addr, int origin_count, MPI_Datatype origin_datatype, int target_rank, MPI_Aint target_disp, int target_count, MPI_Datatype target_datatype, MPI_Op op, MPI_Win win);
 int PMPI_Accumulate_c(const void *origin_addr, MPI_Count origin_count, MPI_Datatype origin_datatype, int target_rank, MPI_Aint target_disp, MPI_Count target_count, MPI_Datatype target_datatype, MPI_Op op, MPI_Win win);
diff --git a/mpistubs.c b/mpistubs.c
index ae7c1a6..f19a3fc 100644
--- a/mpistubs.c
+++ b/mpistubs.c
@@ -2,8 +2,12 @@
 #include "mpi.h"
 
 /* MPI functions */
+int MPI_Abi_get_fortran_booleans(int logical_size, void *logical_true, void *logical_false) { abort(); return 0; }
+int MPI_Abi_get_fortran_info(MPI_Info *info) { abort(); return 0; }
 int MPI_Abi_get_info(MPI_Info *info) { abort(); return 0; }
 int MPI_Abi_get_version(int *abi_major, int *abi_minor) { abort(); return 0; }
+int MPI_Abi_set_fortran_booleans(int logical_size, void *logical_true, void *logical_false) { abort(); return 0; }
+int MPI_Abi_set_fortran_info(MPI_Info info) { abort(); return 0; }
 int MPI_Abort(MPI_Comm comm, int errorcode) { abort(); return 0; }
 int MPI_Accumulate(const void *origin_addr, int origin_count, MPI_Datatype origin_datatype, int target_rank, MPI_Aint target_disp, int target_count, MPI_Datatype target_datatype, MPI_Op op, MPI_Win win) { abort(); return 0; }
 int MPI_Accumulate_c(const void *origin_addr, MPI_Count origin_count, MPI_Datatype origin_datatype, int target_rank, MPI_Aint target_disp, MPI_Count target_count, MPI_Datatype target_datatype, MPI_Op op, MPI_Win win) { abort(); return 0; }
@@ -668,8 +672,12 @@ int MPI_T_source_get_num(int *num_sources) { abort(); return 0; }
 int MPI_T_source_get_timestamp(int source_index, MPI_Count *timestamp) { abort(); return 0; }
 
 /* PMPI functions */
+int PMPI_Abi_get_fortran_booleans(int logical_size, void *logical_true, void *logical_false) { abort(); return 0; }
+int PMPI_Abi_get_fortran_info(MPI_Info *info) { abort(); return 0; }
 int PMPI_Abi_get_info(MPI_Info *info) { abort(); return 0; }
 int PMPI_Abi_get_version(int *abi_major, int *abi_minor) { abort(); return 0; }
+int PMPI_Abi_set_fortran_booleans(int logical_size, void *logical_true, void *logical_false) { abort(); return 0; }
+int PMPI_Abi_set_fortran_info(MPI_Info info) { abort(); return 0; }
 int PMPI_Abort(MPI_Comm comm, int errorcode) { abort(); return 0; }
 int PMPI_Accumulate(const void *origin_addr, int origin_count, MPI_Datatype origin_datatype, int target_rank, MPI_Aint target_disp, int target_count, MPI_Datatype target_datatype, MPI_Op op, MPI_Win win) { abort(); return 0; }
 int PMPI_Accumulate_c(const void *origin_addr, MPI_Count origin_count, MPI_Datatype origin_datatype, int target_rank, MPI_Aint target_disp, MPI_Count target_count, MPI_Datatype target_datatype, MPI_Op op, MPI_Win win) { abort(); return 0; }