diff --git a/.github/workflows/build_docs.yml b/.github/workflows/build_docs.yml
index 03a1e51..b39d2b6 100644
--- a/.github/workflows/build_docs.yml
+++ b/.github/workflows/build_docs.yml
@@ -18,7 +18,7 @@
      strategy:
        matrix:
          os: ['ubuntu-latest']
-         environment-file: [ci/312-latest.yml]
+         environment-file: [ci/312-latest.yaml]
          experimental: [false]
      defaults:
        run: