diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8809bad..0dd74be 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,10 +14,7 @@ jobs:
     strategy:
       matrix:
         os: [macos-latest, ubuntu-latest, windows-latest]
-        python-version: ["3.6", "3.7", "3.8", "3.9", "3.10", "3.11"]
-        exclude:
-          - os: ubuntu-latest  # Ubuntu-latest can only install 3.7+.
-            python-version: 3.6
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
       fail-fast: false
 
     steps:
@@ -36,11 +33,11 @@ jobs:
 
       - name: Format
         run: black --check --diff green example
-        if: matrix.python-version == '3.11' && matrix.os == 'ubuntu-latest'
+        if: matrix.python-version == '3.12' && matrix.os == 'ubuntu-latest'
 
       - name: Mypy
         run: mypy .
-        if: matrix.python-version == '3.11' && matrix.os == 'ubuntu-latest'
+        if: matrix.python-version == '3.12' && matrix.os == 'ubuntu-latest'
 
       - name: Test
         run: |
@@ -51,10 +48,10 @@ jobs:
         run: |
           pip install --upgrade coveralls
           green -tvvvvr green
-        if: matrix.python-version == '3.11' && matrix.os == 'ubuntu-latest'
+        if: matrix.python-version == '3.12' && matrix.os == 'ubuntu-latest'
 
       - name: Coveralls
         run: coveralls --service=github
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        if: matrix.python-version == '3.11' && matrix.os == 'ubuntu-latest'
+        if: matrix.python-version == '3.12' && matrix.os == 'ubuntu-latest'