diff --git a/.azure-pipelines/azure-pipelines-osx.yml b/.azure-pipelines/azure-pipelines-osx.yml
index 70ae05a..60fd811 100755
--- a/.azure-pipelines/azure-pipelines-osx.yml
+++ b/.azure-pipelines/azure-pipelines-osx.yml
@@ -5,7 +5,7 @@
 jobs:
 - job: osx
   pool:
-    vmImage: macOS-11
+    vmImage: macOS-12
   strategy:
     matrix:
       osx_64_mpimpich:
diff --git a/.ci_support/linux_64_mpimpich.yaml b/.ci_support/linux_64_mpimpich.yaml
index c8928f9..a6809ff 100644
--- a/.ci_support/linux_64_mpimpich.yaml
+++ b/.ci_support/linux_64_mpimpich.yaml
@@ -5,7 +5,7 @@ c_compiler_version:
 c_stdlib:
 - sysroot
 c_stdlib_version:
-- '2.12'
+- '2.17'
 cdt_name:
 - cos6
 channel_sources:
@@ -33,7 +33,7 @@ mpich:
 netcdf_fortran:
 - '4.6'
 openmpi:
-- '4'
+- '5'
 perl:
 - 5.32.1
 target_platform:
diff --git a/.ci_support/linux_64_mpinompi.yaml b/.ci_support/linux_64_mpinompi.yaml
index c6e02c7..ea7767e 100644
--- a/.ci_support/linux_64_mpinompi.yaml
+++ b/.ci_support/linux_64_mpinompi.yaml
@@ -5,7 +5,7 @@ c_compiler_version:
 c_stdlib:
 - sysroot
 c_stdlib_version:
-- '2.12'
+- '2.17'
 cdt_name:
 - cos6
 channel_sources:
@@ -33,7 +33,7 @@ mpich:
 netcdf_fortran:
 - '4.6'
 openmpi:
-- '4'
+- '5'
 perl:
 - 5.32.1
 target_platform:
diff --git a/.ci_support/linux_64_mpiopenmpi.yaml b/.ci_support/linux_64_mpiopenmpi.yaml
index 6087745..6574f5d 100644
--- a/.ci_support/linux_64_mpiopenmpi.yaml
+++ b/.ci_support/linux_64_mpiopenmpi.yaml
@@ -5,7 +5,7 @@ c_compiler_version:
 c_stdlib:
 - sysroot
 c_stdlib_version:
-- '2.12'
+- '2.17'
 cdt_name:
 - cos6
 channel_sources:
@@ -33,7 +33,7 @@ mpich:
 netcdf_fortran:
 - '4.6'
 openmpi:
-- '4'
+- '5'
 perl:
 - 5.32.1
 target_platform:
diff --git a/.ci_support/linux_aarch64_mpimpich.yaml b/.ci_support/linux_aarch64_mpimpich.yaml
index 183aaaf..6acc9b3 100644
--- a/.ci_support/linux_aarch64_mpimpich.yaml
+++ b/.ci_support/linux_aarch64_mpimpich.yaml
@@ -37,7 +37,7 @@ mpich:
 netcdf_fortran:
 - '4.6'
 openmpi:
-- '4'
+- '5'
 perl:
 - 5.32.1
 target_platform:
diff --git a/.ci_support/linux_aarch64_mpinompi.yaml b/.ci_support/linux_aarch64_mpinompi.yaml
index 3654bdd..7df8803 100644
--- a/.ci_support/linux_aarch64_mpinompi.yaml
+++ b/.ci_support/linux_aarch64_mpinompi.yaml
@@ -37,7 +37,7 @@ mpich:
 netcdf_fortran:
 - '4.6'
 openmpi:
-- '4'
+- '5'
 perl:
 - 5.32.1
 target_platform:
diff --git a/.ci_support/linux_aarch64_mpiopenmpi.yaml b/.ci_support/linux_aarch64_mpiopenmpi.yaml
index 2784eb1..df1026a 100644
--- a/.ci_support/linux_aarch64_mpiopenmpi.yaml
+++ b/.ci_support/linux_aarch64_mpiopenmpi.yaml
@@ -37,7 +37,7 @@ mpich:
 netcdf_fortran:
 - '4.6'
 openmpi:
-- '4'
+- '5'
 perl:
 - 5.32.1
 target_platform:
diff --git a/.ci_support/linux_ppc64le_mpimpich.yaml b/.ci_support/linux_ppc64le_mpimpich.yaml
index 3659864..2b2f882 100644
--- a/.ci_support/linux_ppc64le_mpimpich.yaml
+++ b/.ci_support/linux_ppc64le_mpimpich.yaml
@@ -33,7 +33,7 @@ mpich:
 netcdf_fortran:
 - '4.6'
 openmpi:
-- '4'
+- '5'
 perl:
 - 5.32.1
 target_platform:
diff --git a/.ci_support/linux_ppc64le_mpinompi.yaml b/.ci_support/linux_ppc64le_mpinompi.yaml
index de2023f..381a4e9 100644
--- a/.ci_support/linux_ppc64le_mpinompi.yaml
+++ b/.ci_support/linux_ppc64le_mpinompi.yaml
@@ -33,7 +33,7 @@ mpich:
 netcdf_fortran:
 - '4.6'
 openmpi:
-- '4'
+- '5'
 perl:
 - 5.32.1
 target_platform:
diff --git a/.ci_support/linux_ppc64le_mpiopenmpi.yaml b/.ci_support/linux_ppc64le_mpiopenmpi.yaml
index d9d3faf..267e9ae 100644
--- a/.ci_support/linux_ppc64le_mpiopenmpi.yaml
+++ b/.ci_support/linux_ppc64le_mpiopenmpi.yaml
@@ -33,7 +33,7 @@ mpich:
 netcdf_fortran:
 - '4.6'
 openmpi:
-- '4'
+- '5'
 perl:
 - 5.32.1
 target_platform:
diff --git a/.ci_support/migrations/openmpi5.yaml b/.ci_support/migrations/openmpi5.yaml
new file mode 100644
index 0000000..74cdfc6
--- /dev/null
+++ b/.ci_support/migrations/openmpi5.yaml
@@ -0,0 +1,8 @@
+__migrator:
+  build_number: 1
+  commit_message: Rebuild for openmpi 5
+  kind: version
+  migration_number: 1
+migrator_ts: 1703196161.1453235
+openmpi:
+- '5'
diff --git a/.ci_support/osx_64_mpimpich.yaml b/.ci_support/osx_64_mpimpich.yaml
index 66ac4c7..6a24c27 100644
--- a/.ci_support/osx_64_mpimpich.yaml
+++ b/.ci_support/osx_64_mpimpich.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
-- '10.9'
+- '10.13'
+MACOSX_SDK_VERSION:
+- '10.13'
 c_compiler:
 - clang
 c_compiler_version:
@@ -7,7 +9,7 @@ c_compiler_version:
 c_stdlib:
 - macosx_deployment_target
 c_stdlib_version:
-- '10.9'
+- '10.13'
 channel_sources:
 - conda-forge
 channel_targets:
@@ -33,7 +35,7 @@ mpich:
 netcdf_fortran:
 - '4.6'
 openmpi:
-- '4'
+- '5'
 perl:
 - 5.32.1
 target_platform:
diff --git a/.ci_support/osx_64_mpinompi.yaml b/.ci_support/osx_64_mpinompi.yaml
index e04805b..96daf48 100644
--- a/.ci_support/osx_64_mpinompi.yaml
+++ b/.ci_support/osx_64_mpinompi.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
-- '10.9'
+- '10.13'
+MACOSX_SDK_VERSION:
+- '10.13'
 c_compiler:
 - clang
 c_compiler_version:
@@ -7,7 +9,7 @@ c_compiler_version:
 c_stdlib:
 - macosx_deployment_target
 c_stdlib_version:
-- '10.9'
+- '10.13'
 channel_sources:
 - conda-forge
 channel_targets:
@@ -33,7 +35,7 @@ mpich:
 netcdf_fortran:
 - '4.6'
 openmpi:
-- '4'
+- '5'
 perl:
 - 5.32.1
 target_platform:
diff --git a/.ci_support/osx_64_mpiopenmpi.yaml b/.ci_support/osx_64_mpiopenmpi.yaml
index 2893d03..7b33a1b 100644
--- a/.ci_support/osx_64_mpiopenmpi.yaml
+++ b/.ci_support/osx_64_mpiopenmpi.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
-- '10.9'
+- '10.13'
+MACOSX_SDK_VERSION:
+- '10.13'
 c_compiler:
 - clang
 c_compiler_version:
@@ -7,7 +9,7 @@ c_compiler_version:
 c_stdlib:
 - macosx_deployment_target
 c_stdlib_version:
-- '10.9'
+- '10.13'
 channel_sources:
 - conda-forge
 channel_targets:
@@ -33,7 +35,7 @@ mpich:
 netcdf_fortran:
 - '4.6'
 openmpi:
-- '4'
+- '5'
 perl:
 - 5.32.1
 target_platform:
diff --git a/.ci_support/osx_arm64_mpimpich.yaml b/.ci_support/osx_arm64_mpimpich.yaml
index 90d2e3c..879d3be 100644
--- a/.ci_support/osx_arm64_mpimpich.yaml
+++ b/.ci_support/osx_arm64_mpimpich.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
 - '11.0'
+MACOSX_SDK_VERSION:
+- '11.0'
 c_compiler:
 - clang
 c_compiler_version:
@@ -33,7 +35,7 @@ mpich:
 netcdf_fortran:
 - '4.6'
 openmpi:
-- '4'
+- '5'
 perl:
 - 5.32.1
 target_platform:
diff --git a/.ci_support/osx_arm64_mpinompi.yaml b/.ci_support/osx_arm64_mpinompi.yaml
index b07be73..703b834 100644
--- a/.ci_support/osx_arm64_mpinompi.yaml
+++ b/.ci_support/osx_arm64_mpinompi.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
 - '11.0'
+MACOSX_SDK_VERSION:
+- '11.0'
 c_compiler:
 - clang
 c_compiler_version:
@@ -33,7 +35,7 @@ mpich:
 netcdf_fortran:
 - '4.6'
 openmpi:
-- '4'
+- '5'
 perl:
 - 5.32.1
 target_platform:
diff --git a/.ci_support/osx_arm64_mpiopenmpi.yaml b/.ci_support/osx_arm64_mpiopenmpi.yaml
index 2b47f6c..8fd2f71 100644
--- a/.ci_support/osx_arm64_mpiopenmpi.yaml
+++ b/.ci_support/osx_arm64_mpiopenmpi.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
 - '11.0'
+MACOSX_SDK_VERSION:
+- '11.0'
 c_compiler:
 - clang
 c_compiler_version:
@@ -33,7 +35,7 @@ mpich:
 netcdf_fortran:
 - '4.6'
 openmpi:
-- '4'
+- '5'
 perl:
 - 5.32.1
 target_platform:
diff --git a/.gitattributes b/.gitattributes
index 7f32763..18f114a 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -20,8 +20,8 @@ bld.bat text eol=crlf
 .travis.yml linguist-generated=true
 .scripts/* linguist-generated=true
 .woodpecker.yml linguist-generated=true
-LICENSE.txt linguist-generated=true
-README.md linguist-generated=true
+/LICENSE.txt linguist-generated=true
+/README.md linguist-generated=true
 azure-pipelines.yml linguist-generated=true
 build-locally.py linguist-generated=true
 shippable.yml linguist-generated=true
diff --git a/recipe/conda_build_config.yaml b/recipe/conda_build_config.yaml
index 6f98d4c..8041ff5 100644
--- a/recipe/conda_build_config.yaml
+++ b/recipe/conda_build_config.yaml
@@ -1,4 +1,8 @@
 mpi:
   - nompi
   - mpich  # [not win]
-  - openmpi  # [not win]
\ No newline at end of file
+  - openmpi  # [not win]
+
+# needed to avoid issue in https://github.com/conda-forge/openmpi-feedstock/issues/143
+c_stdlib_version:
+  - 2.17  # [linux]
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index 01cd6a1..0227cfa 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -1,5 +1,5 @@
 {% set version = "8.6.1" %}
-{% set build = 0 %}
+{% set build = 1 %}
 
 # ensure mpi is defined (needed for conda-smithy recipe-lint)
 {% set mpi = mpi or 'nompi' %}
@@ -60,12 +60,14 @@ requirements:
     - libnetcdf * {{ mpi_prefix }}_*  # [build_platform != target_platform and mpi == 'openmpi']
     # Unix
     - {{ compiler('c') }}  # [unix]
+    - {{ stdlib("c") }}    # [unix]
     - {{ compiler('cxx') }}  # [unix]
     - {{ compiler('fortran') }}  # [unix]
     - make  # [unix]
     - pkg-config  # [unix]
     # Win
     - {{ compiler('m2w64_c') }}  # [win]
+    - {{ stdlib("m2w64_c") }}    # [win]
     - {{ compiler('m2w64_cxx') }}  # [win]
     - {{ compiler('m2w64_fortran') }}  # [win]
     - m2-autoconf  # [win]