diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 30ba6e0..e1866c2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,13 +24,13 @@ jobs:
         - path: $NANOSP_SDK
           name: nanosp
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Build application for SDK ${{ matrix.sdk.name }}
         run: |
           make clean
           make BOLOS_SDK=${{ matrix.sdk.path }}
       - name: Upload app binary
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: app
           path: bin
@@ -41,12 +41,12 @@ jobs:
     container:
       image: ghcr.io/ledgerhq/ledger-app-builder/ledger-app-builder:latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Build with Clang Static Analyzer
         run: |
           make clean
           scan-build --use-cc=clang -analyze-headers -enable-checker security -enable-checker unix -enable-checker valist -o scan-build --status-bugs make default
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         if: failure()
         with:
           name: scan-build
diff --git a/Makefile b/Makefile
index a679a22..d850d64 100644
--- a/Makefile
+++ b/Makefile
@@ -13,7 +13,7 @@
 #  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
-#*******************************************************************************
+#******************************************************************************* 
 
 ifeq ($(BOLOS_SDK),)
 $(error Environment variable BOLOS_SDK is not set)