diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index bad1922..e17ae2d 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -188,7 +188,7 @@ jobs:
         run: conda env update --name base --file docs/environment.yml
 
       - name: Build Docs
-        run: make -C docs html
+        run: conda run --name base make -C docs html
 
   # required check
   analyze: