diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 8088c4d..6377e10 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.9, 3.10, 3.11, 3.12]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
 
     steps:
       - uses: actions/checkout@v3
diff --git a/setup.py b/setup.py
index b7bf12d..d5181d4 100644
--- a/setup.py
+++ b/setup.py
@@ -1,6 +1,6 @@
 from setuptools import setup, find_packages
 
-VERSION = "0.3.8"
+VERSION = "0.3.9"
 
 NAME = "macq"