diff --git a/.github/workflows/extract_extra_deps.py b/.github/workflows/extract_extra_deps.py
index 8925c7d..dc474bf 100644
--- a/.github/workflows/extract_extra_deps.py
+++ b/.github/workflows/extract_extra_deps.py
@@ -1,4 +1,4 @@
-# .github/workflows/extract_extra_deps.py
+# .github/workflows/extract_extras.py
 import toml
 
 pyproject = toml.load("pyproject.toml")
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 8198842..55fbe51 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -33,9 +33,9 @@ jobs:
     - name: Install dependencies including optional dependencies
       run: |
         python -m pip install toml
-        EXTRAS=$(python .github/workflows/extract_extra_deps.py)
+        EXTRAS=$(python .github/workflows/extract_extras.py)
         echo "EXTRAS=$EXTRAS"
-        poetry install $(echo $EXTRAS | sed "s/,/ --extras /g")
+        poetry install $(echo $EXTRAS | sed 's/\([^,]\+\)/--extras \1/g' | tr '\n' ' ')
 
     - name: Install pytest
       run: |