diff --git a/.ci/scripts/calculate_jobs.py b/.ci/scripts/calculate_jobs.py
index b1f604eeb..c2198e0dd 100755
--- a/.ci/scripts/calculate_jobs.py
+++ b/.ci/scripts/calculate_jobs.py
@@ -18,6 +18,13 @@
 import json
 import os
 
+
+def set_output(key: str, value: str):
+    # See https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-an-output-parameter
+    with open(os.environ["GITHUB_OUTPUT"], "at") as f:
+        print(f"{key}={value}", file=f)
+
+
 IS_PR = os.environ["GITHUB_REF"].startswith("refs/pull/")
 
 # First calculate the various trial jobs.
@@ -81,7 +88,7 @@ print("::endgroup::")
 test_matrix = json.dumps(
     trial_sqlite_tests + trial_postgres_tests + trial_no_extra_tests
 )
-print(f"::set-output name=trial_test_matrix::{test_matrix}")
+set_output("trial_test_matrix", test_matrix)
 
 
 # First calculate the various sytest jobs.
@@ -125,4 +132,4 @@ print(json.dumps(sytest_tests, indent=4))
 print("::endgroup::")
 
 test_matrix = json.dumps(sytest_tests)
-print(f"::set-output name=sytest_test_matrix::{test_matrix}")
+set_output("sytest_test_matrix", test_matrix)
diff --git a/.github/workflows/docs.yaml b/.github/workflows/docs.yaml
index 17b9df601..798e308f2 100644
--- a/.github/workflows/docs.yaml
+++ b/.github/workflows/docs.yaml
@@ -54,7 +54,7 @@ jobs:
           esac
 
           # finally, set the 'branch-version' var.
-          echo "::set-output name=branch-version::$branch"
+          echo "branch-version=$branch" >> "$GITHUB_OUTPUT"
           
       # Deploy to the target directory.
       - name: Deploy to gh pages
diff --git a/.github/workflows/release-artifacts.yml b/.github/workflows/release-artifacts.yml
index 1c004fbc1..e1b1e2909 100644
--- a/.github/workflows/release-artifacts.yml
+++ b/.github/workflows/release-artifacts.yml
@@ -34,7 +34,7 @@ jobs:
           if [[ $GITHUB_REF == refs/tags/* ]]; then
               dists=$(scripts-dev/build_debian_packages.py --show-dists-json)
           fi
-          echo "::set-output name=distros::$dists"
+          echo "distros=$dists" >> "$GITHUB_OUTPUT"
     # map the step outputs to job outputs
     outputs:
       distros: ${{ steps.set-distros.outputs.distros }}
diff --git a/changelog.d/14216.misc b/changelog.d/14216.misc
new file mode 100644
index 000000000..6fad16d83
--- /dev/null
+++ b/changelog.d/14216.misc
@@ -0,0 +1 @@
+Update CI config to avoid GitHub Actions deprecation warnings.