diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index e62d8e7..7588e9b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -25,12 +25,10 @@ jobs:
       with:
         python-version: '3.12'
 
-    - name: Cache Poetry and Virtual Environment
+    - name: Cache dependencies
       uses: actions/cache@v3
       with:
-        path: |
-          ~/.poetry
-          .venv
+        path: .venv
         key: poetry-${{ runner.os }}-${{ hashFiles('**/poetry.lock') }}
         restore-keys: |
           poetry-${{ runner.os }}-
@@ -40,20 +38,14 @@ jobs:
         curl -sSL https://install.python-poetry.org | python3 -
         echo "$HOME/.poetry/bin" >> $GITHUB_PATH
 
+    - name: Configure Poetry to use in-project virtualenv
+      run: |
+        poetry config virtualenvs.in-project true
+
     - name: Install dependencies with Poetry
       run: |
         poetry install --sync --no-interaction
 
-    - name: Cache dependencies
-      uses: actions/cache@v3
-      with:
-        path: |
-          ~/.poetry
-          .venv
-        key: poetry-${{ runner.os }}-${{ hashFiles('**/poetry.lock') }}
-        restore-keys: |
-          poetry-${{ runner.os }}-
-
   check-formatting:
     runs-on: ubuntu-latest
     needs: setup-environment  # Waits for setup-environment to finish
@@ -67,21 +59,23 @@ jobs:
       with:
         python-version: '3.12'
 
-    - name: Install Poetry
-      run: |
-        curl -sSL https://install.python-poetry.org | python3 -
-        echo "$HOME/.poetry/bin" >> $GITHUB_PATH
-
-    - name: Restore cached Poetry and Virtual Environment
+    - name: Cache dependencies
       uses: actions/cache@v3
       with:
-        path: |
-          ~/.poetry
-          .venv
+        path: .venv
         key: poetry-${{ runner.os }}-${{ hashFiles('**/poetry.lock') }}
         restore-keys: |
           poetry-${{ runner.os }}-
 
+    - name: Install Poetry
+      run: |
+        curl -sSL https://install.python-poetry.org | python3 -
+        echo "$HOME/.poetry/bin" >> $GITHUB_PATH
+
+    - name: Configure Poetry to use in-project virtualenv
+      run: |
+        poetry config virtualenvs.in-project true
+
     - name: Check code formatting with Black
       run: |
         poetry run black --check .
@@ -109,21 +103,23 @@ jobs:
       with:
         python-version: '3.12'
 
-    - name: Install Poetry
-      run: |
-        curl -sSL https://install.python-poetry.org | python3 -
-        echo "$HOME/.poetry/bin" >> $GITHUB_PATH
-
-    - name: Restore cached Poetry and Virtual Environment
+    - name: Cache dependencies
       uses: actions/cache@v3
       with:
-        path: |
-          ~/.poetry
-          .venv
+        path: .venv
         key: poetry-${{ runner.os }}-${{ hashFiles('**/poetry.lock') }}
         restore-keys: |
           poetry-${{ runner.os }}-
 
+    - name: Install Poetry
+      run: |
+        curl -sSL https://install.python-poetry.org | python3 -
+        echo "$HOME/.poetry/bin" >> $GITHUB_PATH
+
+    - name: Configure Poetry to use in-project virtualenv
+      run: |
+        poetry config virtualenvs.in-project true
+
     - name: Run tests with pytest
       run: |
-        poetry run pytest --maxfail=1 --disable-warnings -q
+        poetry run pytest --maxfail=1 --disable-warnings -q
\ No newline at end of file