diff --git a/.github/workflows/BuildDeploy.yml b/.github/workflows/BuildDeploy.yml
index 7001339..7d13601 100644
--- a/.github/workflows/BuildDeploy.yml
+++ b/.github/workflows/BuildDeploy.yml
@@ -41,7 +41,7 @@ jobs:
       - run: echo 'SemVer2=${{ steps.nbgv.outputs.SemVer2 }}'
 
       - name: 'Cache: .nuke/temp, ~/.nuget/packages'
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             .nuke/temp
diff --git a/.github/workflows/BuildOnly.yml b/.github/workflows/BuildOnly.yml
index abb33a2..d0627a8 100644
--- a/.github/workflows/BuildOnly.yml
+++ b/.github/workflows/BuildOnly.yml
@@ -31,7 +31,7 @@ jobs:
           fetch-depth: 0
 
       - name: 'Cache: .nuke/temp, ~/.nuget/packages'
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             .nuke/temp