diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c648a5b..5c0cb40 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,6 +6,12 @@ on:
       - release-*
   pull_request:
     types: [opened, synchronize, reopened]
+
+# needed to allow julia-actions/cache to delete old caches that it has created
+permissions:
+  actions: write
+  contents: read
+
 jobs:
   test:
     name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }} - ${{ github.event_name }}
@@ -13,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        # Since EnergyModelsCompliance doesn't have binary dependencies,
+        # Since EnergyModelsRenewableProducers doesn't have binary dependencies,
         # only test on a subset of possible platforms.
         include:
           - version: '1'  # The latest point-release (Linux)
@@ -22,28 +28,19 @@ jobs:
           - version: '1'  # The latest point-release (Windows)
             os: windows-latest
             arch: x64
-          - version: 'lts'  # The long term stable version (Linux) 
+          - version: 'lts'  # lts
             os: ubuntu-latest
             arch: x64
-          - version: 'lts'  # The long term stable version (Windows) 
+          - version: 'lts'  # lts
             os: windows-latest
             arch: x64
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
-      - uses: actions/cache@v3
-        env:
-          cache-name: cache-artifacts
-        with:
-          path: ~/.julia/artifacts
-          key: ${{ runner.os }}-test-${{ env.cache-name }}-${{ hashFiles('**/Project.toml') }}
-          restore-keys: |
-            ${{ runner.os }}-test-${{ env.cache-name }}-
-            ${{ runner.os }}-test-
-            ${{ runner.os }}-
+      - uses: julia-actions/cache@v3
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
         with:
diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index 76aff3f..24fc6f3 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -5,14 +5,20 @@ on:
     tags: '*'
   pull_request:
     types: [opened, synchronize, reopened]
+
+# needed to allow julia-actions/cache to delete old caches that it has created
+permissions:
+  actions: write
+  contents: read
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
       - uses: julia-actions/setup-julia@latest
         with:
           version: '1'
+      - uses: julia-actions/cache@v3
       - name: Install dependencies
         shell: julia --color=yes --project=docs/ {0}
         run: |