diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
index 9475d98..d4509a1 100644
--- a/.github/workflows/cd.yml
+++ b/.github/workflows/cd.yml
@@ -19,9 +19,9 @@ jobs:
   build-book:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
-      - uses: prefix-dev/setup-pixi@v0.8.14
+      - uses: prefix-dev/setup-pixi@v0.9.0
         with:
           pixi-version: v0.28.2
 
@@ -36,7 +36,7 @@ jobs:
   build-pyodide:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - uses: astral-sh/setup-uv@v6
 
@@ -52,7 +52,7 @@ jobs:
   build-slides:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Make slides
         run: npx @marp-team/marp-cli@latest --input-dir slides --output _output
@@ -89,7 +89,7 @@ jobs:
           path: public/slides
 
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v4
         with:
           path: public