diff --git a/workflows/ci.yml b/workflows/ci.yml
index 4f2daa7..8eb5934 100644
--- a/workflows/ci.yml
+++ b/workflows/ci.yml
@@ -40,7 +40,7 @@ jobs:
       shell: bash -l {0}
       run: |
         set -vxeuo pipefail
-        python -m pip install -r requirements.txt
+        python -m pip install -r requirements.in
         python -m pip install .[dev]
         python -m pip list