diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 8e7674a..1dfaad3 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -20,7 +20,7 @@ jobs:
         uses: actions/cache@v2
         with:
           path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('requirements.txt') }}
+          key: ${{ runner.os }}-pip-${{ hashFiles('docs/requirements.txt') }}
           restore-keys: |
             ${{ runner.os }}-pip-
             ${{ runner.os }}-