diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a2a7dd8..602acec 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -37,22 +37,22 @@ jobs:
 
     runs-on: ${{ matrix.m.os }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: 'Checkout MPC'
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           repository: DOCGroup/MPC
           path: MPC
           fetch-depth: 1
       - name: 'Checkout ACE_TAO'
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           repository: DOCGroup/ACE_TAO
           ref: ace6tao2
           path: ACE_TAO
           fetch-depth: 1
       - name: 'Checkout OpenDDS'
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           repository: OpenDDS/OpenDDS
           ref: ${{ matrix.opendds_branch }}