diff --git a/.github/workflows/abi.yml b/.github/workflows/abi.yml
index d972d58..619c33a 100644
--- a/.github/workflows/abi.yml
+++ b/.github/workflows/abi.yml
@@ -53,7 +53,7 @@ jobs:
     steps:
 
     - name: Checkout MPI ABI stubs
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         repository: mpi-forum/mpi-abi-stubs
         ref: main
@@ -74,7 +74,7 @@ jobs:
         architecture: x64
 
     - name: Checkout mpi4py
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         repository: ${{ inputs.mpi4py-git || 'mpi4py/mpi4py' }}
         ref: ${{ inputs.mpi4py-ref }}
@@ -113,7 +113,7 @@ jobs:
               librdmacm-dev
 
     - name: Checkout MPI
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         repository: ${{ inputs.mpi-git || 'pmodels/mpich' }}
         ref: ${{ inputs.mpi-ref }}
@@ -163,7 +163,7 @@ jobs:
         architecture: x64
 
     - name: Checkout mpi4py
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         repository: ${{ inputs.mpi4py-git || 'mpi4py/mpi4py' }}
         ref: ${{ inputs.mpi4py-ref }}
diff --git a/.github/workflows/impi.yml b/.github/workflows/impi.yml
index c68c815..3dc4795 100644
--- a/.github/workflows/impi.yml
+++ b/.github/workflows/impi.yml
@@ -89,7 +89,7 @@ jobs:
               numpy cffi pyyaml
 
     - name: Checkout mpi4py
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         repository: ${{ inputs.mpi4py-git || 'mpi4py/mpi4py' }}
         ref: ${{ inputs.mpi4py-ref }}
diff --git a/.github/workflows/mpich.yml b/.github/workflows/mpich.yml
index b2b7666..c21802a 100644
--- a/.github/workflows/mpich.yml
+++ b/.github/workflows/mpich.yml
@@ -73,7 +73,7 @@ jobs:
               libnuma-dev
 
     - name: Checkout MPI
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         repository: ${{ inputs.mpi-git || 'pmodels/mpich' }}
         ref: ${{ inputs.mpi-ref }}
@@ -133,7 +133,7 @@ jobs:
               numpy cffi pyyaml
 
     - name: Checkout mpi4py
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         repository: ${{ inputs.mpi4py-git || 'mpi4py/mpi4py' }}
         ref: ${{ inputs.mpi4py-ref }}
diff --git a/.github/workflows/msmpi.yml b/.github/workflows/msmpi.yml
index ff0f914..15c3e44 100644
--- a/.github/workflows/msmpi.yml
+++ b/.github/workflows/msmpi.yml
@@ -88,7 +88,7 @@ jobs:
               numpy cffi pyyaml
 
     - name: Checkout mpi4py
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         repository: ${{ inputs.mpi4py-git || 'mpi4py/mpi4py' }}
         ref: ${{ inputs.mpi4py-ref }}
diff --git a/.github/workflows/mvapich.yml b/.github/workflows/mvapich.yml
index 3d32405..8a8c82a 100644
--- a/.github/workflows/mvapich.yml
+++ b/.github/workflows/mvapich.yml
@@ -130,7 +130,7 @@ jobs:
               numpy cffi pyyaml
 
     - name: Checkout mpi4py
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         repository: ${{ inputs.mpi4py-git || 'mpi4py/mpi4py' }}
         ref: ${{ inputs.mpi4py-ref }}
diff --git a/.github/workflows/openmpi.yml b/.github/workflows/openmpi.yml
index 0fd3481..af3c4c4 100644
--- a/.github/workflows/openmpi.yml
+++ b/.github/workflows/openmpi.yml
@@ -68,7 +68,7 @@ jobs:
               libnuma-dev
 
     - name: Checkout MPI
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         repository: ${{ inputs.mpi-git || 'open-mpi/ompi' }}
         ref: ${{ matrix.mpi-ref }}
@@ -131,7 +131,7 @@ jobs:
               numpy cffi pyyaml
 
     - name: Checkout mpi4py
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         repository: ${{ inputs.mpi4py-git || 'mpi4py/mpi4py' }}
         ref: ${{ inputs.mpi4py-ref }}