diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 22ff5c2..d9f58b8 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -11,17 +11,17 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python 3.8
-      uses: actions/setup-python@v3
+    - uses: actions/checkout@v4
+    - name: Set up Python 3.9
+      uses: actions/setup-python@v4
       with:
-        python-version: "3.8"
+        python-version: "3.9"
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
         pip install pipenv
         # use --pre flag to enable use of prerelease package versions
-        pipenv install --pre
+        pipenv install
         pipenv install pytest coverage
     - name: Test with pytest
       env:
diff --git a/Pipfile b/Pipfile
index 4bf4437..889c015 100644
--- a/Pipfile
+++ b/Pipfile
@@ -9,7 +9,7 @@ spdx-tools = '0.8.2'
 [dev-packages]
 
 [requires]
-python_version = "3.8"
+python_version = "3.9"
 
 [pipenv]
 allow_prereleases = true