diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 49d947e0c..1f6df5c17 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,7 +33,7 @@ jobs:
         uses: actions/cache@v2
         with:
           path: ${{ env.pythonLocation }}
-          key: ${{ env.pythonLocation }}-${{ env.GITHUB_ENV }}-${{ hashFiles('setup.py') }}-${{ hashFiles('requirements.txt') }}-${{ hashFiles('requirements-dev.txt') }}
+          key: ${{ env.pythonLocation }}-${{ env.date }}-${{ hashFiles('setup.py') }}-${{ hashFiles('requirements.txt') }}-${{ hashFiles('requirements-dev.txt') }}
       - name: Install dependencies
         if: steps.cache-python-env.outputs.cache-hit != 'true'
         run: |
@@ -69,7 +69,7 @@ jobs:
       uses: actions/cache@v2
       with:
         path: ${{ env.pythonLocation }}
-        key: ${{ env.pythonLocation }}-${{ env.GITHUB_ENV }}-${{ hashFiles('setup.py') }}-${{ hashFiles('requirements.txt') }}-${{ hashFiles('requirements-dev.txt') }}
+        key: ${{ env.pythonLocation }}-${{ env.date }}-${{ hashFiles('setup.py') }}-${{ hashFiles('requirements.txt') }}-${{ hashFiles('requirements-dev.txt') }}
     - name: Run Elasticsearch
       run: docker run -d -p 9200:9200 -e "discovery.type=single-node" -e "ES_JAVA_OPTS=-Xms128m -Xmx128m" elasticsearch:7.9.2
 
diff --git a/setup.py b/setup.py
index 72f370cc1..7218c42b1 100644
--- a/setup.py
+++ b/setup.py
@@ -60,7 +60,7 @@ setup(
     packages=find_packages(exclude=["*.tests", "*.tests.*", "tests.*", "tests"]),
     dependency_links=dependency_links,
     install_requires=parsed_requirements,
-    python_requires=">=3.6.0",
+    python_requires=">=3.7.0",
     tests_require=["pytest"],
     classifiers=[
         "Intended Audience :: Science/Research",