diff --git a/.github/workflows/test-artifact-cleanup.yml b/.github/workflows/test-artifact-cleanup.yml
index c9a675f8..f075acc6 100644
--- a/.github/workflows/test-artifact-cleanup.yml
+++ b/.github/workflows/test-artifact-cleanup.yml
@@ -16,7 +16,7 @@ jobs:
         shell: bash
         run: echo "Dumbo" > file.txt
       - name: Upload dummy file
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: telemetry-tools-attrs-1234
           path: file.txt
diff --git a/telemetry-impls/load-then-clone/action.yml b/telemetry-impls/load-then-clone/action.yml
index 33b5d454..697a691a 100644
--- a/telemetry-impls/load-then-clone/action.yml
+++ b/telemetry-impls/load-then-clone/action.yml
@@ -30,7 +30,7 @@ runs:
           | grep -q . && echo 'true' || echo 'false');
         echo "artifact_found=${artifact_found}" | tee -a $GITHUB_OUTPUT;
     - name: Download base environment variables file
-      uses: actions/download-artifact@v5
+      uses: actions/download-artifact@v6
       if: steps.check-artifact-exists.outputs.artifact_found == 'true'
       with:
         name: telemetry-tools-env-vars
diff --git a/telemetry-impls/stash-base-env-vars/action.yml b/telemetry-impls/stash-base-env-vars/action.yml
index 11bc158f..f897d663 100644
--- a/telemetry-impls/stash-base-env-vars/action.yml
+++ b/telemetry-impls/stash-base-env-vars/action.yml
@@ -31,7 +31,7 @@ runs:
         SHARED_ACTIONS_REF=${SHARED_ACTIONS_REF:-main}
         EOF
     - name: Upload env vars file
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v5
       with:
         name: telemetry-tools-env-vars
         path: telemetry-env-vars
diff --git a/telemetry-impls/stash-job-artifacts/action.yml b/telemetry-impls/stash-job-artifacts/action.yml
index 7f2c347c..1ac916a3 100644
--- a/telemetry-impls/stash-job-artifacts/action.yml
+++ b/telemetry-impls/stash-job-artifacts/action.yml
@@ -17,7 +17,7 @@ runs:
         printf "%s\n" "${values[@]}" > telemetry-artifacts/attrs;
 
     - name: Upload attr file and any other files
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v5
       with:
         name: telemetry-tools-artifacts-${{ env.JOB_ID }}
         path: telemetry-artifacts
diff --git a/telemetry-impls/summarize/action.yml b/telemetry-impls/summarize/action.yml
index ae02d67a..f7926f3a 100644
--- a/telemetry-impls/summarize/action.yml
+++ b/telemetry-impls/summarize/action.yml
@@ -20,13 +20,13 @@ runs:
       with:
         all_jobs: true
     - name: Upload job JSON file if debugging
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v5
       if: runner.debug == '1'
       with:
         name: telemetry-tools-all_jobs.json
         path: all_jobs.json
     # This downloads ALL of the files that we have collected from each job.
-    - uses: actions/download-artifact@v5
+    - uses: actions/download-artifact@v6
       with:
         path: telemetry-artifacts
         pattern: telemetry-tools-*