diff --git a/.github/workflows/aqua.yml b/.github/workflows/aqua.yml
index 8e14f591650..fadf9cc856d 100644
--- a/.github/workflows/aqua.yml
+++ b/.github/workflows/aqua.yml
@@ -12,7 +12,7 @@ jobs:
       - uses: julia-actions/setup-julia@latest
         with:
           version: '1'
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - name: Aqua
         shell: julia --color=yes {0}
         run: |
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e95e6b1e107..a3430f71379 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,7 +37,7 @@ jobs:
             arch: x64
     steps:
       - uses: actions/checkout@v4
-      - uses: julia-actions/setup-julia@v1
+      - uses: julia-actions/setup-julia@v2
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
@@ -47,6 +47,7 @@ jobs:
         with:
           depwarn: error
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         with:
           file: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/doc_cleanup.yml b/.github/workflows/doc_cleanup.yml
index 22d90435ef9..fd7de1e6098 100644
--- a/.github/workflows/doc_cleanup.yml
+++ b/.github/workflows/doc_cleanup.yml
@@ -1,15 +1,13 @@
 name: Doc Preview Cleanup
-
 on:
   pull_request:
     types: [closed]
-
 jobs:
   doc-preview-cleanup:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout gh-pages branch
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           ref: gh-pages
       - name: Delete preview and history + push changes
@@ -23,4 +21,4 @@ jobs:
               git push --force origin gh-pages-new:gh-pages
             fi
         env:
-            PRNUM: ${{ github.event.number }}
\ No newline at end of file
+            PRNUM: ${{ github.event.number }}
diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index ef3635ef305..e8e1145d4b1 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -11,7 +11,7 @@ jobs:
     env:
       GKSwstype: nul
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@latest
         with:
           version: '1'
diff --git a/.github/workflows/extension-tests.yml b/.github/workflows/extension-tests.yml
index ab7e688a1a5..4f6201457a4 100644
--- a/.github/workflows/extension-tests.yml
+++ b/.github/workflows/extension-tests.yml
@@ -25,20 +25,11 @@ jobs:
           - package: 'SumOfSquares'
           - package: 'UnitJuMP'
     steps:
-      - uses: actions/checkout@v3
-      - uses: julia-actions/setup-julia@v1
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v2
         with:
           version: '1'
-      - 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@v1
       - uses: julia-actions/julia-buildpkg@v1
       - name: Test
         shell: julia --color=yes {0}
diff --git a/.github/workflows/format_check.yml b/.github/workflows/format_check.yml
index 50bc51a6ba2..eb54ca6d623 100644
--- a/.github/workflows/format_check.yml
+++ b/.github/workflows/format_check.yml
@@ -13,7 +13,7 @@ jobs:
       - uses: julia-actions/setup-julia@latest
         with:
           version: '1'
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
       - name: Format check
         shell: julia --color=yes {0}
         run: |