diff --git a/.github/workflows/integration.yml b/.github/workflows/integration.yml
index 37eb6817e..1dfcaa9df 100644
--- a/.github/workflows/integration.yml
+++ b/.github/workflows/integration.yml
@@ -24,7 +24,7 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
       - name: Cache poetry installer
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         id: cache-poetry-installer
         env:
           cache-name: cache-poetry-installer
@@ -44,7 +44,7 @@ jobs:
           poetry config virtualenvs.create true
           poetry config virtualenvs.in-project false
       - name: Cache poetry
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           cache-name: cache-poetry
         with:
@@ -54,7 +54,7 @@ jobs:
             ${{ runner.os }}-poetry-1.3.1-cache-
       - name: Cache .venv
         id: cache-venv
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/work/wps/wps/api/.venv
           key: ${{ runner.os }}-venv-poetry-1.3.1-${{ hashFiles('**/poetry.lock') }}
@@ -97,7 +97,7 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
       - name: Cache poetry installer
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         id: cache-poetry-installer
         env:
           cache-name: cache-poetry-installer
@@ -118,7 +118,7 @@ jobs:
           poetry config virtualenvs.in-project false
       # poetry cache folder: /home/runner/.cache/pypoetry
       - name: Cache poetry
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           cache-name: cache-poetry
         with:
@@ -128,7 +128,7 @@ jobs:
             ${{ runner.os }}-poetry-1.3.1-cache-
       - name: Cache .venv
         id: cache-venv
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/work/wps/wps/api/.venv
           key: ${{ runner.os }}-venv-poetry-1.3.1-${{ hashFiles('**/poetry.lock') }}
@@ -150,7 +150,7 @@ jobs:
         # /home/runner/work/_temp/Library ; By caching this folder, subsequent calls to
         # install cffdrs run much faster.
         id: cache-r-cffdrs
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: /home/runner/work/_temp/Library
           key: ${{ runner.os }}-r-${{ matrix.R }}-cffdrs
@@ -193,7 +193,7 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: |
             **/node_modules
@@ -259,7 +259,7 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
       - name: Cache poetry installer
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         id: cache-poetry-installer
         env:
           cache-name: cache-poetry-installer
@@ -281,7 +281,7 @@ jobs:
           poetry config experimental.new-installer false
       # poetry cache folder: /home/runner/.cache/pypoetry
       - name: Cache poetry
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           cache-name: cache-poetry
         with:
diff --git a/.github/workflows/post_merge_integration.yml b/.github/workflows/post_merge_integration.yml
index 8de80cc12..dd425cf21 100644
--- a/.github/workflows/post_merge_integration.yml
+++ b/.github/workflows/post_merge_integration.yml
@@ -25,7 +25,7 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
       - name: Cache poetry installer
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         id: cache-poetry-installer
         env:
           cache-name: cache-poetry-installer
@@ -45,7 +45,7 @@ jobs:
           poetry config virtualenvs.create true
           poetry config virtualenvs.in-project false
       - name: Cache poetry
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           cache-name: cache-poetry
         with:
@@ -55,7 +55,7 @@ jobs:
             ${{ runner.os }}-poetry-1.3.1-cache-
       - name: Cache .venv
         id: cache-venv
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/work/wps/wps/api/.venv
           key: ${{ runner.os }}-venv-poetry-1.3.1-${{ hashFiles('**/poetry.lock') }}
@@ -98,7 +98,7 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
       - name: Cache poetry installer
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         id: cache-poetry-installer
         env:
           cache-name: cache-poetry-installer
@@ -119,7 +119,7 @@ jobs:
           poetry config virtualenvs.in-project false
       # poetry cache folder: /home/runner/.cache/pypoetry
       - name: Cache poetry
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           cache-name: cache-poetry
         with:
@@ -129,7 +129,7 @@ jobs:
             ${{ runner.os }}-poetry-1.3.1-cache-
       - name: Cache .venv
         id: cache-venv
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/work/wps/wps/api/.venv
           key: ${{ runner.os }}-venv-poetry-1.3.1-${{ hashFiles('**/poetry.lock') }}
@@ -145,7 +145,7 @@ jobs:
           r-version: ${{ matrix.R }}
       - name: Cache /home/runner/work/_temp/Library
         id: cache-r-cffdrs
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: /home/runner/work/_temp/Library
           key: ${{ runner.os }}-r-${{ matrix.R }}-cffdrs
@@ -188,7 +188,7 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: |
             **/node_modules