diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 608e72d..cb1b405 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -20,7 +20,7 @@ jobs:
         unreal_engine_version:
           [
             "4.26.0", "4.27.0",
-            "5.0.0", "5.1.0", "5.2.0", "5.3.0", "5.4.0", "5.5.0"
+            "5.0.0", "5.1.0", "5.2.0", "5.3.0", "5.4.0", "5.5.0", "5.6.0"
           ]
         version:
           ["free", "full"]
@@ -47,11 +47,44 @@ jobs:
           mv AdvancedControlFlow_UE${{ matrix.unreal_engine_version }}_${{ matrix.version }}.zip release-plugin-${{ matrix.version }}
 
       - name: Upload artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
+        with:
+          name: AdvancedControlFlow_${{ matrix.unreal_engine_version }}_${{ matrix.version }}
+          path: "release-plugin-${{ matrix.version }}"
+
+  merge-plugin-pack:
+    name: Merge packed plugins
+    runs-on: ubuntu-latest
+    needs: [plugin-pack]
+    strategy:
+      fail-fast: false
+      matrix:
+        version:
+          ["free", "full"]
+    steps:
+      - name: Download artifacts
+        uses: actions/download-artifact@v4
+        with:
+          pattern: AdvancedControlFlow_*_${{ matrix.version }}
+          merge-multiple: true
+          path: dist
+
+      - name: Move artifacts
+        run: |
+          mkdir release-plugin-${{ matrix.version }}
+          mv dist/AdvancedControlFlow_*_${{ matrix.version }}.zip release-plugin-${{ matrix.version }}
+
+      - name: Updload artifacts
+        uses: actions/upload-artifact@v4
         with:
           name: AdvancedControlFlow_${{ matrix.version }}
           path: "release-plugin-${{ matrix.version }}"
 
+      - name: Delete unused artifacts
+        uses: geekyeggo/delete-artifact@v5
+        with:
+          name: AdvancedControlFlow_*_${{ matrix.version }}
+
   sample-pack:
     name: Pack sample sources
     runs-on: ubuntu-latest
@@ -66,21 +99,21 @@ jobs:
           mv samples/SampleProject.zip release-sample
 
       - name: Upload artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: SampleProject
           path: "release-sample"
 
   publish:
     name: Publish
-    needs: [plugin-pack, sample-pack]
+    needs: [merge-plugin-pack, sample-pack]
     if: startsWith(github.ref, 'refs/tags/v')
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
       - name: Fetch Artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           path: dist
       - name: Install hub command
diff --git a/AdvancedControlFlow/AdvancedControlFlow.uplugin b/AdvancedControlFlow/AdvancedControlFlow.uplugin
index f1117ea..2b7bcf6 100644
--- a/AdvancedControlFlow/AdvancedControlFlow.uplugin
+++ b/AdvancedControlFlow/AdvancedControlFlow.uplugin
@@ -4,7 +4,7 @@
   "VersionName": "1.6.0",
   "FriendlyName": "Advanced Control Flow",
   "Description": "Blueprint nodes to realize the complex control flow",
-  "EngineVersion": "5.5.0",
+  "EngineVersion": "5.6.0",
   "Category": "Other",
   "CreatedBy": "nutti (Colory Games)",
   "CreatedByURL": "https://github.com/colory-games/UEPlugin-AdvancedControlFlow",
diff --git a/README.md b/README.md
index 0e462d6..1ff0c2c 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ By using this plugin, you can realize this case with only one Multi-Branch node.
 
 This plugin supports on the below environment.
 
-* Unreal Engine Version: 4.26-4.27 / 5.0-5.5
+* Unreal Engine Version: 4.26-4.27 / 5.0-5.6
 * Development Platforms: Windows / macOS / Linux
 * Target Build Platforms: All platforms
 
diff --git a/tools/remove_code.sh b/tools/remove_code.sh
index 2e847a3..bb5b493 100644
--- a/tools/remove_code.sh
+++ b/tools/remove_code.sh
@@ -6,7 +6,7 @@ set -eEu
 
 SUPPORTED_VERSIONS=(
     "4.26.0" "4.27.0"
-    "5.0.0" "5.1.0" "5.2.0" "5.3.0" "5.4.0" "5.5.0"
+    "5.0.0" "5.1.0" "5.2.0" "5.3.0" "5.4.0" "5.5.0" "5.6.0"
 )
 
 function usage() {
diff --git a/tools/replace_engine_version.sh b/tools/replace_engine_version.sh
index 928a153..a8d53c4 100644
--- a/tools/replace_engine_version.sh
+++ b/tools/replace_engine_version.sh
@@ -6,7 +6,7 @@ set -eEu
 
 SUPPORTED_VERSIONS=(
     "4.26.0" "4.27.0"
-    "5.0.0" "5.1.0" "5.2.0" "5.3.0" "5.4.0" "5.5.0"
+    "5.0.0" "5.1.0" "5.2.0" "5.3.0" "5.4.0" "5.5.0" "5.6.0"
 )
 
 function usage() {
@@ -33,6 +33,6 @@ if [ ${supported} -eq 0 ]; then
 fi
 
 for file in `find ${source_dir} -name "*.uplugin"`; do
-    sed -i -e "s/\"EngineVersion\": \"5.5.0\",/\"EngineVersion\": \"${engine_version}\",/g" ${file}
+    sed -i -e "s/\"EngineVersion\": \"5.6.0\",/\"EngineVersion\": \"${engine_version}\",/g" ${file}
     echo "Replaced engine version in ${file}"
 done