diff --git a/.github/workflows/build-release.yml b/.github/workflows/build-release.yml
index dc118eae..c9af1d7f 100644
--- a/.github/workflows/build-release.yml
+++ b/.github/workflows/build-release.yml
@@ -49,7 +49,7 @@ jobs:
         run: |
           strip ppx-linux
       - name: Upload PPX artifact
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ppx-linux
           path: packages/rescript-relay/rescript-relay-ppx/ppx-*
@@ -90,7 +90,7 @@ jobs:
         run: |
           cp _build/default/bin/RescriptRelayPpxApp.exe ppx-${{ matrix.platform }}
       - name: Upload PPX artifact ${{ matrix.platform }}
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ppx-${{ matrix.platform }}
           path: packages/rescript-relay/rescript-relay-ppx/ppx-*
@@ -141,7 +141,7 @@ jobs:
           command: build
           # add --locked back when we have a better way to ensure it's up to date
           args: --manifest-path=packages/relay/compiler/Cargo.toml --release --target ${{ matrix.target.target }} ${{ matrix.target.features && '--features' }} ${{ matrix.target.features }}
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         with:
           name: ${{ matrix.target.artifact-name }}
           path: packages/relay/compiler/target/${{ matrix.target.target }}/release/${{ matrix.target.build-name }}
@@ -244,7 +244,7 @@ jobs:
             relay-compiler-macos-arm64
             relay-compiler-linux-musl
       - name: Upload built folder
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: release-build
           path: _release/
diff --git a/.github/workflows/ppx.yml b/.github/workflows/ppx.yml
index 7807bdf4..d00f6400 100644
--- a/.github/workflows/ppx.yml
+++ b/.github/workflows/ppx.yml
@@ -48,7 +48,7 @@ jobs:
         run: |
           strip ppx-linux
       - name: Upload PPX artifact
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ppx-${{ matrix.platform }}
           path: packages/rescript-relay/rescript-relay-ppx/ppx-*
@@ -80,7 +80,7 @@ jobs:
         run: |
           strip _build/default/bin/RescriptRelayPpxApp.exe
       - name: Upload PPX artifact ${{ matrix.platform }}
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ppx-${{ matrix.platform }}
           path: packages/rescript-relay/rescript-relay-ppx/_build/default/bin/RescriptRelayPpxApp.exe