diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 316b720..33975e5 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        emsdk_ver: ["3.1.58"]
+        emsdk_ver: ["3.1.45"]
 
     steps:
       - uses: actions/checkout@v2
@@ -29,13 +29,13 @@ jobs:
         uses: mamba-org/setup-micromamba@v1
         with:
           environment-file: environment-dev.yml
-          environment-name: pyjs-wasm 
+          environment-name: pyjs-wasm
 
 
       - name: Install Playwright
         run: |
           playwright install
-      
+
       - name: Setup emsdk
         shell: bash -el {0}
         run: |
@@ -59,7 +59,7 @@ jobs:
           mkdir build
           pushd build
 
-  
+
           export PREFIX=$MAMBA_ROOT_PREFIX/envs/pyjs-build-wasm
           export CMAKE_PREFIX_PATH=$PREFIX
           export CMAKE_SYSTEM_PREFIX_PATH=$PREFIX
@@ -145,4 +145,4 @@ jobs:
               --pyjs-dir      $(pwd)/build \
               --headless \
               --async-main \
-              --no-cache
\ No newline at end of file
+              --no-cache