diff --git a/.github/workflows/api.yml b/.github/workflows/api.yml
index bf4fd77..281f1c8 100644
--- a/.github/workflows/api.yml
+++ b/.github/workflows/api.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: krdlab/setup-haxe@v1
         with:
           haxe-version: 4.1.5
@@ -24,7 +24,7 @@ jobs:
       - name: Build API reference
         working-directory: docs
         run: haxe docs.hxml
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: amfio-docs
           path: bin/api/
diff --git a/.github/workflows/flash.yml b/.github/workflows/flash.yml
index df0191e..502312e 100644
--- a/.github/workflows/flash.yml
+++ b/.github/workflows/flash.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: krdlab/setup-haxe@v1
         with:
           haxe-version: 4.1.5
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index af14103..2f5a84b 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -13,7 +13,7 @@ jobs:
         haxe-version: [4.1.5, 4.2.5, 4.3.2]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: krdlab/setup-haxe@v1
         with:
           haxe-version: ${{ matrix.haxe-version }}
@@ -43,7 +43,7 @@ jobs:
         haxe-version: [4.1.5, 4.2.5, 4.3.2]
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: krdlab/setup-haxe@v1
         with:
           haxe-version: ${{ matrix.haxe-version }}
@@ -62,7 +62,7 @@ jobs:
         haxe-version: [4.1.5, 4.2.5, 4.3.2]
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: krdlab/setup-haxe@v1
         with:
           haxe-version: ${{ matrix.haxe-version }}
@@ -81,7 +81,7 @@ jobs:
         haxe-version: [4.1.5, 4.2.5, 4.3.2]
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: joshtynjala/setup-adobe-air-action@v2
         with:
           air-version: "33.1"