diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1ee6b54..f2eefa7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,10 +11,10 @@ jobs:
     name: "IntentProof CI: Build and Test"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Checkout intentproof-tools (SPEC_REF source)
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           repository: IntentProof/intentproof-tools
           ref: main
@@ -31,13 +31,13 @@ jobs:
           echo "ref=$ref" >> "$GITHUB_OUTPUT"
 
       - name: Checkout intentproof-spec at pinned ref
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           repository: IntentProof/intentproof-spec
           ref: ${{ steps.spec_ref.outputs.ref }}
           path: intentproof-spec
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: '3.11'