diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 98820c86..c86a0641 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -208,7 +208,7 @@ jobs:
       contents: write
     name: wasm32 - prebuild
     runs-on: ubuntu-24.04
-    container: "emscripten/emsdk:3.1.70"
+    container: "emscripten/emsdk:4.0.5"
     steps:
       - name: Checkout
         uses: actions/checkout@v4