diff --git a/.circleci/config.yml b/.circleci/config.yml
index 1449faf89f25..98b455ca9020 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -16,8 +16,8 @@ parameters:
 
 # Anchors to prevent forgetting to update a version
 os_version: &os_version ubuntu20
-baselibs_version: &baselibs_version v7.24.0
-bcs_version: &bcs_version v11.3.0
+baselibs_version: &baselibs_version v7.25.0
+bcs_version: &bcs_version v11.5.0
 tag_build_arg_name: &tag_build_arg_name maplversion
 
 orbs:
@@ -178,9 +178,9 @@ workflows:
           baselibs_version: *baselibs_version
           container_name: mapl
           mpi_name: intelmpi
-          mpi_version: 2021.6.0
+          mpi_version: "2021.13"
           compiler_name: intel
-          compiler_version: 2022.1.0
+          compiler_version: "2024.2"
           image_name: geos-env
           tag_build_arg_name: *tag_build_arg_name
       - ci/publish_docker:
diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index f4b1e5f07cbc..76ed2d251565 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -35,7 +35,7 @@ jobs:
     name: Build and Test MAPL GNU
     runs-on: ubuntu-latest
     container:
-      image: gmao/ubuntu20-geos-env-mkl:v7.24.0-openmpi_5.0.2-gcc_13.2.0
+      image: gmao/ubuntu20-geos-env-mkl:v7.25.0-openmpi_5.0.2-gcc_13.2.0
       # Per https://github.com/actions/virtual-environments/issues/1445#issuecomment-713861495
       # It seems like we might not need secrets on GitHub Actions which is good for forked
       # pull requests
@@ -86,7 +86,7 @@ jobs:
     name: Build and Test MAPL Intel
     runs-on: ubuntu-latest
     container:
-      image: gmao/ubuntu20-geos-env:v7.24.0-intelmpi_2021.6.0-intel_2022.1.0
+      image: gmao/ubuntu20-geos-env:v7.25.0-intelmpi_2021.13-intel_2024.2
       # Per https://github.com/actions/virtual-environments/issues/1445#issuecomment-713861495
       # It seems like we might not need secrets on GitHub Actions which is good for forked
       # pull requests
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c923819f1ab9..cfea0235e181 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Deprecated
 
+## [2.46.3] - 2024-08-16
+
+### Fixed
+
+- Fix bug in supporting externally initialized MPI
+
 ## [2.46.2] - 2024-05-31
 
 ### Removed
diff --git a/CMakeLists.txt b/CMakeLists.txt
index b2bd7cd2619a..2a0ecb3b109a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,7 @@ endif ()
 
 project (
   MAPL
-  VERSION 2.46.2
+  VERSION 2.46.3
   LANGUAGES Fortran CXX C)  # Note - CXX is required for ESMF
 
 # Set the possible values of build type for cmake-gui
diff --git a/gridcomps/Cap/MAPL_Cap.F90 b/gridcomps/Cap/MAPL_Cap.F90
index 007d857d6da0..3905711b796a 100644
--- a/gridcomps/Cap/MAPL_Cap.F90
+++ b/gridcomps/Cap/MAPL_Cap.F90
@@ -447,17 +447,19 @@ subroutine initialize_mpi(this, unusable, rc)
 
       _UNUSED_DUMMY(unusable)
 
-      !call MPI_Initialized(this%mpi_already_initialized, ierror)
-      !_VERIFY(ierror)
-      call  ESMF_InitializePreMPI(_RC)
+      call MPI_Initialized(this%mpi_already_initialized, ierror)
+      _VERIFY(ierror)
 
       if (.not. this%mpi_already_initialized) then
+         call ESMF_InitializePreMPI(_RC)
          call MPI_Init_thread(MPI_THREAD_MULTIPLE, provided, ierror)
-         _ASSERT(provided == MPI_THREAD_MULTIPLE, 'MPI_THREAD_MULTIPLE not supported by this MPI.')
-!         call MPI_Init_thread(MPI_THREAD_SINGLE, provided, ierror)
-!         _VERIFY(ierror)
-!         _ASSERT(provided == MPI_THREAD_SINGLE, "MPI_THREAD_SINGLE not supported by this MPI.")
+      else
+         ! If we are here, then MPI has already been initialized by the user
+         ! and we are just using it. But we need to make sure that the user
+         ! has initialized MPI with the correct threading level.
+         call MPI_Query_thread(provided, ierror)
       end if
+      _ASSERT(provided == MPI_THREAD_MULTIPLE, 'MPI_THREAD_MULTIPLE not supported by this MPI.')
 
       call MPI_Comm_rank(this%comm_world, this%rank, ierror); _VERIFY(ierror)
       call MPI_Comm_size(this%comm_world, npes_world, ierror); _VERIFY(ierror)