diff --git a/.github/workflows/macos-linux-conda.yml b/.github/workflows/macos-linux-conda.yml
index 8b1b4a93965c0c211d1519b697b7f2199cb0b813..e7e55e79b9d67b819c5cc626777347cfa95cb35b 100644
--- a/.github/workflows/macos-linux-conda.yml
+++ b/.github/workflows/macos-linux-conda.yml
@@ -24,7 +24,7 @@ jobs:
         activate-environment: eigenpy
         auto-update-conda: true
         environment-file: .github/workflows/conda/environment.yml
-        python-version: 3.10
+        python-version: '3.10'
 
     - uses: actions/cache@v2
       with: