diff --git a/.github/workflows/build-release.yml b/.github/workflows/build-release.yml
index e76d12a8c96be..e0da7bed2e383 100644
--- a/.github/workflows/build-release.yml
+++ b/.github/workflows/build-release.yml
@@ -121,6 +121,7 @@ jobs:
           cmake --build . -j $env:NUMBER_OF_PROCESSORS --config Release
 
       - name: 'Set environment variables: version number'
+        shell: bash
         run: |
           BITCOIN_PATCHED_VERSION=$(grep -oP "(?<=^CMAKE_PROJECT_VERSION:STATIC=).+(?=)" build/CMakeCache.txt)
           echo "BITCOIN_PATCHED_VERSION=$BITCOIN_PATCHED_VERSION" >> "$GITHUB_ENV"