diff --git a/.github/workflows/build-assets.yml b/.github/workflows/build-assets.yml
index 62e136e2..7ebe6a1b 100644
--- a/.github/workflows/build-assets.yml
+++ b/.github/workflows/build-assets.yml
@@ -28,7 +28,7 @@ jobs:
         run: make plugin
 
       - name: Upload plugin to artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: plugin
           path: target/wasm32-wasip2/release/plugin.wasm
@@ -39,7 +39,7 @@ jobs:
           gzip -k -f target/wasm32-wasip2/release/plugin_wizened.wasm && mv target/wasm32-wasip2/release/plugin_wizened.wasm.gz plugin.wasm.gz
 
       - name: Upload archived plugin to artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: plugin.wasm.gz
           path: plugin.wasm.gz
@@ -54,7 +54,7 @@ jobs:
         run: shasum -a 256 plugin.wasm.gz | awk '{ print $1 }' > plugin.wasm.gz.sha256
 
       - name: Upload asset hash to artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: plugin.wasm.gz.sha256
           path: plugin.wasm.gz.sha256
@@ -135,7 +135,7 @@ jobs:
         run: gzip -k -f ${{ matrix.path }} && mv ${{ matrix.path }}.gz ${{ matrix.asset_name }}.gz
 
       - name: Upload assets to artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: ${{ matrix.asset_name }}.gz
           path: ${{ matrix.asset_name }}.gz
@@ -150,7 +150,7 @@ jobs:
         run: ${{ matrix.shasum_cmd }} ${{ matrix.asset_name }}.gz | awk '{ print $1 }' > ${{ matrix.asset_name }}.gz.sha256
 
       - name: Upload asset hash to artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: ${{ matrix.asset_name }}.gz.sha256
           path: ${{ matrix.asset_name }}.gz.sha256
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4535f7e4..38a9a959 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -55,7 +55,7 @@ jobs:
           cargo build --package=javy-test-invalid-plugin --release --target=wasm32-unknown-unknown
 
       - name: Upload plugins
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: plugins
           path: target/**/release/*.wasm