diff --git a/.github/workflows/bash.yml b/.github/workflows/bash.yml
index 4d740df23ac..eb34e3ad76d 100644
--- a/.github/workflows/bash.yml
+++ b/.github/workflows/bash.yml
@@ -85,7 +85,7 @@ jobs:
 
       - name: Upload artifact
         if: failure()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
-          name: Upload cylc-run artifact
+          name: 'cylc-run (bash-${{ matrix.bash-version }})'
           path: cylc-run
diff --git a/.github/workflows/test_fast.yml b/.github/workflows/test_fast.yml
index 6530bb85cd6..74be3220472 100644
--- a/.github/workflows/test_fast.yml
+++ b/.github/workflows/test_fast.yml
@@ -70,7 +70,7 @@ jobs:
 
       - name: Upload failed tests artifact
         if: failure()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: cylc-run (${{ matrix.os }} py-${{ matrix.python-version }})
           path: ~/cylc-run/
@@ -81,7 +81,7 @@ jobs:
           coverage report
 
       - name: Upload coverage artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: coverage_${{ matrix.os }}_py-${{ matrix.python-version }}
           path: coverage.xml
@@ -138,7 +138,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Download coverage artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
 
       - name: Codecov upload
         uses: codecov/codecov-action@v3
diff --git a/.github/workflows/test_functional.yml b/.github/workflows/test_functional.yml
index 6fad4147345..737f0c3900f 100644
--- a/.github/workflows/test_functional.yml
+++ b/.github/workflows/test_functional.yml
@@ -251,6 +251,7 @@ jobs:
               -exec echo '====== {} ======' \; -exec cat '{}' \;
 
       - name: Set artifact upload name
+        if: always()
         id: uploadname
         run: |
           # artifact name cannot contain '/' characters
@@ -259,7 +260,7 @@ jobs:
 
       - name: Upload failed tests artifact
         if: failure() && steps.test.outcome == 'failure'
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: cylc-run (${{ steps.uploadname.outputs.uploadname }})
           path: ~/cylc-run/
@@ -297,7 +298,7 @@ jobs:
           coverage report
 
       - name: Upload coverage artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: coverage_${{ steps.uploadname.outputs.uploadname }}
           path: coverage.xml
@@ -312,7 +313,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Download coverage artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
 
       - name: Codecov upload
         uses: codecov/codecov-action@v3