diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 790e314..7b504b8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.12"
       - run: pip install ruff
@@ -31,7 +31,7 @@ jobs:
         python-version: ["3.10", "3.11", "3.12"]
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
       - run: pip install -e "protocol/[dev]"
@@ -44,7 +44,7 @@ jobs:
         python-version: ["3.10", "3.11", "3.12"]
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
       - run: pip install -e protocol/ -e "adapters/mcp/[dev]" && pip install -e "core/[dev]"
@@ -56,7 +56,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.12"
       - run: pip install -e protocol/ -e core/ -e "adapters/mcp/[dev]"
@@ -66,7 +66,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.12"
       - run: pip install -e protocol/ -e core/ -e "adapters/client_mcp/[dev]"
@@ -77,7 +77,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.12"
       - name: Install Solana CLI
@@ -104,7 +104,7 @@ jobs:
     if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.12"
       - name: Install Python deps (with crypto)
@@ -120,7 +120,7 @@ jobs:
     needs: [lint, test-protocol, test-core, test-adapters, test-client-mcp, test-localnet]
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.12"
       - run: pip install build
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 3ffb17b..2da47b3 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -12,7 +12,7 @@ jobs:
       id-token: write
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.12"
       - run: pip install build
@@ -29,7 +29,7 @@ jobs:
       id-token: write
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.12"
       - run: pip install build
@@ -46,7 +46,7 @@ jobs:
       id-token: write
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.12"
       - run: pip install build
@@ -63,7 +63,7 @@ jobs:
       id-token: write
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.12"
       - run: pip install build
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index 12be4e2..f313536 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: '3.10'