diff --git a/.github/workflows/CI-build-test.yml b/.github/workflows/CI-build-test.yml
index 6485dd8..b0cdb7a 100644
--- a/.github/workflows/CI-build-test.yml
+++ b/.github/workflows/CI-build-test.yml
@@ -7,13 +7,18 @@ jobs:
   build-and-test:
     name: Build/Test 
     runs-on: ubuntu-20.04
-    steps:    
+    strategy:
+      matrix:
+        python-version:
+          - 3.8.10
+          - 3.11.6
+    steps:
     - uses: actions/checkout@v4
 
-    - name: Use Python
+    - name: Use Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
       with:
-        python-version: '3.11.6'
+        python-version: ${{ matrix.python-version }}
         cache: 'pip'
 
     - name: Install dependencies
diff --git a/requirements.txt b/requirements.txt
index c3bdd22..8992f7e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,19 +6,27 @@ h3==3.7.7
 h3pandas==0.2.6
 itsdangerous==2.1.2
 Jinja2==3.1.3
-keras==2.14.0
-matplotlib==3.8.3
-numpy==1.26.4
-pandas==2.1.2
+keras==2.14.0;python_version>="3.11"
+keras==2.12.0;python_version=="3.8"
+matplotlib==3.8.3;python_version>="3.11"
+matplotlib==3.7.5;python_version=="3.8"
+numpy==1.26.4;python_version>="3.11"
+numpy==1.23.5;python_version=="3.8"
+pandas==2.1.2;python_version>="3.11"
+pandas==2.0.3;python_version=="3.8"
 pillow==10.2.0
 prison==0.2.1
 python-magic==0.4.27
 PyYAML==6.0.1
-scikit-learn==1.4.1.post1
-scipy==1.12.0
+scikit-learn==1.4.1.post1;python_version>="3.11"
+scikit-learn==1.3.2;python_version=="3.8"
+scipy==1.12.0;python_version>="3.11"
+scipy==1.10.1;python_version=="3.8"
 six==1.16.0
-tensorflow==2.14.0
-tifffile==2024.2.12
+tensorflow==2.14.0;python_version>="3.11"
+tensorflow==2.12.0;python_version=="3.8"
+tifffile==2024.2.12;python_version>="3.11"
+tifffile==2023.7.10;python_version=="3.8"
 umap-learn==0.5.5
 uWSGI==2.0.24
 Werkzeug==3.0.1