diff --git a/.github/workflows/tester.yml b/.github/workflows/tester.yml
index 17bd43f..ae9fb55 100644
--- a/.github/workflows/tester.yml
+++ b/.github/workflows/tester.yml
@@ -13,16 +13,16 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.11.3]
+        python-version: ["3.9.12", "3.11.3"]
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Create environment variables
         run: |
           echo "PYTHONPATH=$PWD" >> $GITHUB_ENV
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
 
diff --git a/bl_lookup/bl.py b/bl_lookup/bl.py
index 9ec58be..76c8986 100644
--- a/bl_lookup/bl.py
+++ b/bl_lookup/bl.py
@@ -8,12 +8,12 @@
 import yaml
 
 # set the default version for the UI and web service calls
-default_version = os.environ.get('DEFAULT_VERSION', "v3.1.1")
+default_version = os.environ.get('DEFAULT_VERSION', "v3.1.2")
 
 # do not load these versions
 # the 3.0.0-v3.1.0 don't have the predicates-mapping.yaml needed to do predicate resolution
 skip_versions = ['v1.0.0', 'v1.1.0', 'v1.1.1', 'v1.2.0', 'v1.3.0', 'v2.4.2-alpha-qualifiers', 'deprecated-predicates',
-                 'v3.0.0', 'v3.0.1', 'v3.0.2', 'v3.0.3', 'v3.1.0']
+                 'v3.0.0', 'v3.0.1', 'v3.0.2', 'v3.0.3', 'v3.1.0', 'v3.1.1']
 
 
 def get_latest_bl_model_release_url() -> str:
diff --git a/requirements.txt b/requirements.txt
index cf4c306..103ff68 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,3 +15,5 @@ httpx==0.24.1
 httpcore==0.17.1
 fastapi==0.95.2
 uvicorn==0.22.0
+typing-extensions==4.5.0
+