diff --git a/.github/workflows/analysis.yml b/.github/workflows/analysis.yml
index 55f59cf..7f5c8b4 100644
--- a/.github/workflows/analysis.yml
+++ b/.github/workflows/analysis.yml
@@ -70,7 +70,7 @@ jobs:
         run: |
           python -m pytest -m slow --selectAlgorithm ${{ matrix.algorithm }} --saveFileName test_output_${{ matrix.algorithm }}_${{ matrix.SNR }}.csv --SNR ${{ matrix.SNR }} --fitCount 300 --saveDurationFileName test_duration_${{ matrix.algorithm }}_${{ matrix.SNR }}.csv
       - name: Upload raw data
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
             name: Working_Data
             retention-days: 1
@@ -83,7 +83,7 @@ jobs:
     needs: build
     steps:
       - name: Download artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           path: artifacts
       - name: Merge fitting results
@@ -95,7 +95,7 @@ jobs:
           head -n 1 $(ls artifacts/Working_Data/test_duration_*.csv | head -n 1) > test_duration.csv
           tail -q -n +2 artifacts/Working_Data/test_duration_*.csv >> test_duration.csv
       - name: Upload merged artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: Data
           path: |
@@ -121,13 +121,13 @@ jobs:
             any::data.table
             any::ggplot2
       - name: Download artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: Data
       - name: Generate figures
         run: Rscript --vanilla tests/IVIMmodels/unit_tests/analyze.r test_output.csv test_duration.csv
       - name: Upload figures
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: always()
         with:
             name: Figures
@@ -158,13 +158,13 @@ jobs:
             any::tidyverse
             any::assertr
       - name: Download artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: Data
       - name: Test against previous results
         run: Rscript --vanilla tests/IVIMmodels/unit_tests/compare.r test_output.csv test_reference.csv tests/IVIMmodels/unit_tests/reference_output.csv test_results.csv
       - name: Upload data
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: always()
         with:
             name: Comparison