diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 0649ec7a5..2c9254b7d 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -99,7 +99,7 @@ jobs:
         make test
 
     - name: Upload artifacts
-      uses: actions/upload-artifact@v3.2.1-node20
+      uses: actions/upload-artifact@v4.4.3
       with:
         name: logs-${{ matrix.inhouse }}
         path: |
@@ -180,7 +180,7 @@ jobs:
 
     - name: Upload artifacts
       if: env.pinned == 'false'
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v4.4.3
       with:
         name: logs-${{ matrix.inhouse }}
         path: |
diff --git a/.github/workflows/validate.yaml b/.github/workflows/validate.yaml
index d9802d2f2..1b6d6451f 100644
--- a/.github/workflows/validate.yaml
+++ b/.github/workflows/validate.yaml
@@ -16,7 +16,7 @@ jobs:
     if: github.event.pull_request.head.repo.full_name == github.repository
     runs-on: self-hosted
     steps:
-    - uses: lkstrp/pypsa-validator@v0.2.2
+    - uses: lkstrp/pypsa-validator@v0.2.3
       with:
         step: run-self-hosted-validation
         env_file: envs/environment.yaml
@@ -30,7 +30,7 @@ jobs:
     needs: run-validation
     runs-on: ubuntu-latest
     steps:
-    - uses: lkstrp/pypsa-validator@v0.2.2
+    - uses: lkstrp/pypsa-validator@v0.2.3
       with:
         step: create-comment
         snakemake_config: config/test/config.validator.yaml