diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 483f818..755cc68 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.8, 3.9, "3.10"]
+        python-version: [3.9, "3.10"]
         poetry-version: [1.4.0]
         os: [ubuntu-latest, macos-latest]
     runs-on: ${{ matrix.os }}
@@ -33,7 +33,7 @@ jobs:
         id: cache
         with:
           path: .venv
-          key: venv-${{ runner.os }}-${{ steps.full-python-version.outputs.version }}-${{ hashFiles('**/poetry.lock') }}
+          key: venv-${{ runner.os }}-${{ matrix.python-version }}-${{ hashFiles('**/poetry.lock') }}
       - name: Ensure cache is healthy
         if: steps.cache.outputs.cache-hit == 'true'
         run: poetry run pip --version >/dev/null 2>&1 || rm -rf .venv