diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index ce8f2ff..539d207 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -27,6 +27,6 @@ jobs:
          path: deps
          key: ${{ runner.os }}-${{ matrix.elixir }}-otp${{ matrix.otp }}-mix-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
          restore-keys: |
-           ${{ runner.os }}-mix-
+           ${{ runner.os }}-${{ matrix.elixir }}-otp${{ matrix.otp }}-mix-
       - run: mix deps.get
       - run: mix coveralls.github