diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f106859..c7a7124 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,7 +10,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.x'
+          python-version: '3.9'
       - name: Install dependencies
         run: |
           python3 -m pip install pre-commit
@@ -38,4 +38,4 @@ jobs:
       - name: Codecov
         uses: codecov/codecov-action@v3.1.1
         with:
-          - flags: all
+          flags: all
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 6cea5f3..879c41c 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -20,7 +20,7 @@ repos:
       - id: trailing-whitespace
 
   - repo: https://github.com/pycqa/isort
-    rev: 5.9.3
+    rev: 5.12.0
     hooks:
       - id: isort
         files: ".*"
diff --git a/codecov.yml b/codecov.yml
index 403000b..7940262 100644
--- a/codecov.yml
+++ b/codecov.yml
@@ -28,4 +28,4 @@ flag_management:
       statuses:
         - type: project
           target: 100
-          threshold: 1%
\ No newline at end of file
+          threshold: 1%