diff --git a/.github/workflows/compilers.yml b/.github/workflows/compilers.yml
index 9b54303f123..2d65b3372e2 100644
--- a/.github/workflows/compilers.yml
+++ b/.github/workflows/compilers.yml
@@ -119,7 +119,7 @@ jobs:
       
       - name: Upload build log
         if: failure()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: meson-log.txt
           path: modflow6/builddir/meson-logs/meson-log.txt
@@ -178,7 +178,7 @@ jobs:
 
       - name: Upload reports
         if: success() || failure()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: compat
           path: compat/*.csv
@@ -205,7 +205,7 @@ jobs:
         run: pip install tabulate pandas
 
       - name: Download reports
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: compat
           path: .github/compat/new
@@ -228,7 +228,7 @@ jobs:
 
       # only upload wide CSVs and Markdown tables
       - name: Upload artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: compat
           path: |
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 3d5bfaeb77b..f48a9b53262 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -145,7 +145,7 @@ jobs:
         run: cat run-time-comparison.md
     
       - name: Upload benchmarks
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: run-time-comparison
           path: modflow6/distribution/run-time-comparison.md
@@ -159,7 +159,7 @@ jobs:
         run: cat deprecations.md
 
       - name: Upload deprecations
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: deprecations
           path: modflow6/doc/mf6io/mf6ivar/md/deprecations.md
@@ -169,7 +169,7 @@ jobs:
         run: pixi run sphinx
       
       - name: Upload RTD files
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: rtd-files-for-${{ github.sha }}
           path: |
@@ -186,7 +186,7 @@ jobs:
         run: pixi run build-docs
 
       - name: Upload PDF documents
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: mf6io.pdf
           path: |
@@ -253,7 +253,7 @@ jobs:
         working-directory: ${{env.working-directory}}
       
       - name: upload pages artifact
-        uses: actions/upload-pages-artifact@v2
+        uses: actions/upload-pages-artifact@v3
         with:
           path: ${{env.working-directory}}/html
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 48d5de12069..7db6203ae4d 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -260,7 +260,7 @@ jobs:
           if exist rebuilt rd /s /q downloaded
 
       - name: Upload binaries
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: bin-${{ steps.ostag.outputs.ostag }}
           path: modflow6/bin
@@ -427,7 +427,7 @@ jobs:
           echo "ostag=$ostag" >> $GITHUB_OUTPUT
 
       - name: Download pre-built binaries
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: bin-${{ steps.ostag.outputs.ostag }}
           path: bin
@@ -464,7 +464,7 @@ jobs:
           cat md/deprecations.md
 
       - name: Upload deprecations
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: deprecations
           path: modflow6/doc/mf6io/mf6ivar/md/deprecations.md
@@ -493,7 +493,7 @@ jobs:
           mv "doc/ReleaseNotes.pdf" "doc/release.pdf"
 
       - name: Upload documentation artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: doc
           path: doc
@@ -572,7 +572,7 @@ jobs:
           echo "ostag=$ostag" >> $GITHUB_OUTPUT
 
       - name: Download artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           path: ${{ needs.build.outputs.distname }}_${{ steps.ostag.outputs.ostag }}
       
@@ -682,14 +682,14 @@ jobs:
           fi
 
       - name: Upload distribution
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: "${{ needs.build.outputs.distname }}_${{ steps.ostag.outputs.ostag }}"
           path: "${{ needs.build.outputs.distname }}_${{ steps.ostag.outputs.ostag }}.zip"
 
       - name: Upload release notes
         if: runner.os == 'Linux'
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: release_notes
           path: "${{ needs.build.outputs.distname }}_${{ steps.ostag.outputs.ostag }}/doc/release.pdf"