diff --git a/.github/workflows/ClimaCoreMakie.yml b/.github/workflows/ClimaCoreMakie.yml
index a4319413c4..5e3cba58c4 100644
--- a/.github/workflows/ClimaCoreMakie.yml
+++ b/.github/workflows/ClimaCoreMakie.yml
@@ -2,6 +2,15 @@ name: ClimaCoreMakie CI
 on:
   pull_request:
 
+# Needed to allow julia-actions/cache to delete old caches that it has created
+permissions:
+  actions: write
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lib-climacore-makie:
     runs-on: ubuntu-20.04
@@ -9,19 +18,10 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - uses: julia-actions/setup-julia@latest
+      - uses: julia-actions/setup-julia@v2
         with:
           version: '1.10'
-      - 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@v2
       - run: sudo apt-get update && sudo apt-get install -y xorg-dev mesa-utils xvfb libgl1 freeglut3-dev libxrandr-dev libxinerama-dev libxcursor-dev libxi-dev libxext-dev
       - name: Install Julia dependencies
         run: >
@@ -34,7 +34,7 @@ jobs:
           DISPLAY=:0 xvfb-run -s '-screen 0 1024x768x24' julia --project=monorepo -e 'using Pkg; Pkg.test("ClimaCoreMakie")'
           && echo "TESTS_SUCCESSFUL=true" >> $GITHUB_ENV
       - name: Upload test Artifacts
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: climacore-makie-output
           path: |
diff --git a/.github/workflows/ClimaCorePlots.yml b/.github/workflows/ClimaCorePlots.yml
index 96f87d6d00..9273ecc671 100644
--- a/.github/workflows/ClimaCorePlots.yml
+++ b/.github/workflows/ClimaCorePlots.yml
@@ -2,6 +2,15 @@ name: ClimaCorePlots CI
 on:
   pull_request:
 
+# Needed to allow julia-actions/cache to delete old caches that it has created
+permissions:
+  actions: write
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lib-climacore-plots:
     runs-on: ubuntu-20.04
@@ -9,19 +18,10 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - uses: julia-actions/setup-julia@latest
+      - uses: julia-actions/setup-julia@v2
         with:
           version: '1.10'
-      - 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-
-            ${{ runner.os }}-
+      - uses: julia-actions/cache@v2
       - name: Install Julia dependencies
         run: >
           julia --project=monorepo -e 'using Pkg; Pkg.develop(path="$(pwd())"); Pkg.develop(path="$(pwd())/lib/ClimaCorePlots")'
@@ -34,7 +34,7 @@ jobs:
           julia --project=monorepo -e 'using Pkg; Pkg.test("ClimaCorePlots")'
           && echo "TESTS_SUCCESSFUL=true" >> $GITHUB_ENV
       - name: Upload test Artifacts
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: climacore-plots-output
           path: |
diff --git a/.github/workflows/ClimaCoreSpectra.yml b/.github/workflows/ClimaCoreSpectra.yml
index 9eb9e1626c..3ded35c179 100644
--- a/.github/workflows/ClimaCoreSpectra.yml
+++ b/.github/workflows/ClimaCoreSpectra.yml
@@ -2,6 +2,15 @@ name: ClimaCoreSpectra CI
 on:
   pull_request:
 
+# Needed to allow julia-actions/cache to delete old caches that it has created
+permissions:
+  actions: write
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lib-climacore-spectra:
     runs-on: ubuntu-20.04
@@ -9,19 +18,10 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - uses: julia-actions/setup-julia@latest
+      - uses: julia-actions/setup-julia@v2
         with:
           version: '1.10'
-      - 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-
-            ${{ runner.os }}-
+      - uses: julia-actions/cache@v2
       - name: Install Julia dependencies
         run: >
           julia --project=monorepo -e 'using Pkg; Pkg.develop(path="$(pwd())"); Pkg.develop(path="$(pwd())/lib/ClimaCoreSpectra")'
@@ -34,7 +34,7 @@ jobs:
           julia --project=monorepo -e 'using Pkg; Pkg.test("ClimaCoreSpectra")'
           && echo "TESTS_SUCCESSFUL=true" >> $GITHUB_ENV
       - name: Upload test Artifacts
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: climacore-spectra-output
           path: |
diff --git a/.github/workflows/ClimaCoreTempestRemap.yml b/.github/workflows/ClimaCoreTempestRemap.yml
index c3b289e2d8..2e29233a06 100644
--- a/.github/workflows/ClimaCoreTempestRemap.yml
+++ b/.github/workflows/ClimaCoreTempestRemap.yml
@@ -2,6 +2,16 @@ name: ClimaCoreTempestRemap CI
 on:
   pull_request:
 
+# Needed to allow julia-actions/cache to delete old caches that it has created
+permissions:
+  actions: write
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+
 jobs:
   lib-climacore-tempestremap:
     runs-on: ubuntu-20.04
@@ -9,19 +19,10 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - uses: julia-actions/setup-julia@latest
+      - uses: julia-actions/setup-julia@v2
         with:
           version: '1.10'
-      - 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-
-            ${{ runner.os }}-
+      - uses: julia-actions/cache@v2
       - name: Install Julia dependencies
         run: >
           julia --project=monorepo -e 'using Pkg; Pkg.develop(path="$(pwd())"); Pkg.develop(path="$(pwd())/lib/ClimaCoreTempestRemap")'
@@ -33,7 +34,7 @@ jobs:
           julia --project=monorepo -e 'using Pkg; Pkg.test("ClimaCoreTempestRemap")'
           && echo "TESTS_SUCCESSFUL=true" >> $GITHUB_ENV
       - name: Upload test Artifacts
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: climacore-tempestremap-output
           path: |
diff --git a/.github/workflows/ClimaCoreVTK.yml b/.github/workflows/ClimaCoreVTK.yml
index 8b36d0a60f..ba25bb1c96 100644
--- a/.github/workflows/ClimaCoreVTK.yml
+++ b/.github/workflows/ClimaCoreVTK.yml
@@ -2,6 +2,15 @@ name: ClimaCoreVTK CI
 on:
   pull_request:
 
+# Needed to allow julia-actions/cache to delete old caches that it has created
+permissions:
+  actions: write
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lib-climacore-vtk:
     runs-on: ubuntu-20.04
@@ -9,19 +18,10 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - uses: julia-actions/setup-julia@latest
+      - uses: julia-actions/setup-julia@v2
         with:
           version: '1.10'
-      - 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@v2
       - name: Install Paraview
         run: |
           sudo apt-get update && sudo apt-get -y install paraview python3-paraview
@@ -42,7 +42,7 @@ jobs:
           done
         continue-on-error: true
       - name: Upload test Artifacts
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: climacore-vtk-output
           path: |
diff --git a/.github/workflows/Downstream.yml b/.github/workflows/Downstream.yml
index f8d45f83bc..bcb8aec810 100644
--- a/.github/workflows/Downstream.yml
+++ b/.github/workflows/Downstream.yml
@@ -6,6 +6,11 @@ on:
     tags: '*'
   pull_request:
 
+# Needed to allow julia-actions/cache to delete old caches that it has created
+permissions:
+  actions: write
+  contents: read
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
@@ -25,7 +30,7 @@ jobs:
           - 'ClimaTimeSteppers.jl'
     steps:
       - uses: actions/checkout@v4
-      - uses: julia-actions/setup-julia@v1
+      - uses: julia-actions/setup-julia@v2
         with:
           version: '1.10'
       - uses: julia-actions/cache@v2
diff --git a/.github/workflows/UnitTests.yml b/.github/workflows/UnitTests.yml
index fc8e89498c..caefa6bc51 100644
--- a/.github/workflows/UnitTests.yml
+++ b/.github/workflows/UnitTests.yml
@@ -36,10 +36,10 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - uses: julia-actions/setup-julia@latest
+      - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.julia-version }}
-      - uses: julia-actions/cache@v1
+      - uses: julia-actions/cache@v2
       - uses: julia-actions/julia-buildpkg@latest
       - uses: julia-actions/julia-runtest@latest
       - uses: julia-actions/julia-processcoverage@latest
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index f054711f33..487bb78878 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v4
-      - uses: julia-actions/setup-julia@latest
+      - uses: julia-actions/setup-julia@v2
         with:
           version: '1.10'
       - name: Install dependencies