diff --git a/.github/workflows/build-broker-exporter.yml b/.github/workflows/build-broker-exporter.yml
index b4ed58b4..0e9a4000 100644
--- a/.github/workflows/build-broker-exporter.yml
+++ b/.github/workflows/build-broker-exporter.yml
@@ -43,7 +43,7 @@ jobs:
         config: buildkitd.toml
 
     - name: Checkout cads-broker-exporter repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: ecmwf-projects/cads-broker-exporter
         token: ${{ secrets.CADS_PAT }}
diff --git a/.github/workflows/build-cads-image.yml b/.github/workflows/build-cads-image.yml
index 85bdcf9f..7f602990 100644
--- a/.github/workflows/build-cads-image.yml
+++ b/.github/workflows/build-cads-image.yml
@@ -51,7 +51,7 @@ jobs:
         config: buildkitd.toml
 
     - name: Checkout cads-deployment repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: ecmwf-projects/cads-deployment
         ref: ${{ inputs.deployment_branch }}
diff --git a/.github/workflows/build-canary-microservice.yml b/.github/workflows/build-canary-microservice.yml
index a027b7ce..3a5fec89 100644
--- a/.github/workflows/build-canary-microservice.yml
+++ b/.github/workflows/build-canary-microservice.yml
@@ -43,7 +43,7 @@ jobs:
         config: buildkitd.toml
 
     - name: Checkout canary-microservice repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: ecmwf-projects/canary-microservice
         token: ${{ secrets.CADS_PAT }}
diff --git a/.github/workflows/build-cim.yml b/.github/workflows/build-cim.yml
index 31112cac..279436c8 100644
--- a/.github/workflows/build-cim.yml
+++ b/.github/workflows/build-cim.yml
@@ -51,14 +51,14 @@ jobs:
         config: buildkitd.toml
 
     - name: Checkout cads-cim-api repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: ecmwf-projects/cads-cim-api
         token: ${{ secrets.CADS_PAT }}
         path: cads-cim-api
 
     - name: Checkout cads-cim-ui repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: ecmwf-projects/cads-cim-ui
         token: ${{ secrets.CADS_PAT }}
diff --git a/.github/workflows/build-csw-api.yml b/.github/workflows/build-csw-api.yml
index e920bfa5..5815e40b 100644
--- a/.github/workflows/build-csw-api.yml
+++ b/.github/workflows/build-csw-api.yml
@@ -46,7 +46,7 @@ jobs:
         config: buildkitd.toml
 
     - name: Checkout pycsw-dynamic repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: ecmwf-projects/pycsw-dynamic
         token: ${{ secrets.CADS_PAT }}
diff --git a/.github/workflows/build-dask-mars.yml b/.github/workflows/build-dask-mars.yml
index a348b00e..cffef913 100644
--- a/.github/workflows/build-dask-mars.yml
+++ b/.github/workflows/build-dask-mars.yml
@@ -50,7 +50,7 @@ jobs:
         config: buildkitd.toml
 
     - name: Checkout cads-deployment repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: ecmwf-projects/cads-deployment
         ref: ${{ github.event.inputs.deployment_branch }}
@@ -58,7 +58,7 @@ jobs:
         path: .
 
     - name: Clone cads-common repo
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         repository: ecmwf-projects/cads-common
         token: ${{ secrets.CADS_PAT }}
diff --git a/.github/workflows/build-fluentd.yml b/.github/workflows/build-fluentd.yml
index 4972fca0..d740a803 100644
--- a/.github/workflows/build-fluentd.yml
+++ b/.github/workflows/build-fluentd.yml
@@ -43,7 +43,7 @@ jobs:
         config: buildkitd.toml
 
     - name: Checkout fluentd repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: ecmwf-projects/cads-fluentd
         token: ${{ secrets.CADS_PAT }}
diff --git a/.github/workflows/build-keycloak-db.yml b/.github/workflows/build-keycloak-db.yml
index ff6e0aa1..4d01156c 100644
--- a/.github/workflows/build-keycloak-db.yml
+++ b/.github/workflows/build-keycloak-db.yml
@@ -51,7 +51,7 @@ jobs:
         config: buildkitd.toml
 
     - name: Checkout cads-deployment repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: ecmwf-projects/cads-deployment
         ref: ${{ github.event.inputs.deployment_branch }}
diff --git a/.github/workflows/build-monitor-alert-log.yml b/.github/workflows/build-monitor-alert-log.yml
index be354ab8..bb441339 100644
--- a/.github/workflows/build-monitor-alert-log.yml
+++ b/.github/workflows/build-monitor-alert-log.yml
@@ -43,7 +43,7 @@ jobs:
         config: buildkitd.toml
 
     - name: Checkout cads-monitor-alert-log repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: ecmwf-projects/cads-monitor-alert-log
         token: ${{ secrets.CADS_PAT }}
diff --git a/.github/workflows/build-monitor-metrics.yml b/.github/workflows/build-monitor-metrics.yml
index 7777db8e..415db016 100644
--- a/.github/workflows/build-monitor-metrics.yml
+++ b/.github/workflows/build-monitor-metrics.yml
@@ -43,7 +43,7 @@ jobs:
         config: buildkitd.toml
 
     - name: Checkout monitor-metrics repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: ecmwf-projects/cads-monitor-metrics
         token: ${{ secrets.CADS_PAT }}
diff --git a/.github/workflows/build-monitor-nrpe.yml b/.github/workflows/build-monitor-nrpe.yml
index 5f20f218..4208b784 100644
--- a/.github/workflows/build-monitor-nrpe.yml
+++ b/.github/workflows/build-monitor-nrpe.yml
@@ -43,7 +43,7 @@ jobs:
         config: buildkitd.toml
 
     - name: Checkout cads-monitor-nrpe repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: ecmwf-projects/cads-monitor-nrpe
         token: ${{ secrets.CADS_PAT }}
diff --git a/.github/workflows/build-monitor-statistics.yml b/.github/workflows/build-monitor-statistics.yml
index 7ae50e0b..4db6f67e 100644
--- a/.github/workflows/build-monitor-statistics.yml
+++ b/.github/workflows/build-monitor-statistics.yml
@@ -43,7 +43,7 @@ jobs:
         config: buildkitd.toml
 
     - name: Checkout cads-monitor-statistics repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: ecmwf-projects/cads-monitor-statistics
         token: ${{ secrets.CADS_PAT }}
diff --git a/.github/workflows/build-monitor-user-details.yml b/.github/workflows/build-monitor-user-details.yml
index 6798fc2e..8f1a4172 100644
--- a/.github/workflows/build-monitor-user-details.yml
+++ b/.github/workflows/build-monitor-user-details.yml
@@ -43,7 +43,7 @@ jobs:
         config: buildkitd.toml
 
     - name: Checkout cads-monitor-user-details repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: ecmwf-projects/cads-monitor-user-details
         token: ${{ secrets.CADS_PAT }}
diff --git a/.github/workflows/build-obs-manager.yml b/.github/workflows/build-obs-manager.yml
index 4292bd14..18fa01dc 100644
--- a/.github/workflows/build-obs-manager.yml
+++ b/.github/workflows/build-obs-manager.yml
@@ -50,7 +50,7 @@ jobs:
         config: buildkitd.toml
 
     - name: Checkout cads-deployment repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: ecmwf-projects/cads-deployment
         ref: ${{ github.event.inputs.deployment_branch }}
@@ -65,7 +65,7 @@ jobs:
         mode: test
   
     - name: Checkout cads-obs-catalogue-manager repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: ecmwf-projects/cads-obs-catalogue-manager
         ref: ${{ env.CADS_OBS_CATALOGUE_MANAGER }}
diff --git a/.github/workflows/tag.yml b/.github/workflows/tag.yml
index dc25b1d5..a0414c0b 100644
--- a/.github/workflows/tag.yml
+++ b/.github/workflows/tag.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout cads-deployment repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         repository: ecmwf-projects/cads-deployment
         token: ${{ secrets.CADS_PAT }}