diff --git a/.github/workflows/continuous-macos.yml b/.github/workflows/continuous-macos.yml
index f9c0714e..4db9beb4 100644
--- a/.github/workflows/continuous-macos.yml
+++ b/.github/workflows/continuous-macos.yml
@@ -39,6 +39,7 @@ jobs:
       # and build directories, but this is only available with CMake 3.13 and higher.
       # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
       run: >
+        brew unlink python@3.13
         . ${{github.workspace}}/spack/share/spack/setup-env.sh;
         spack load py-pytest;
         export lcov_ROOT=`spack find -p lcov | awk 'NR==2 {print $2}'`;
diff --git a/.github/workflows/env_macos.sh b/.github/workflows/env_macos.sh
index ff11178e..571d19b3 100755
--- a/.github/workflows/env_macos.sh
+++ b/.github/workflows/env_macos.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-
+brew unlink python@3.13
 git clone --depth=1 -b v0.22.2 https://github.com/spack/spack.git
 
 #replace the default configuration file of spack by a simpler one without hash, compiler versions, tags and so on