diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ed91b07..f7f95d4 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -22,7 +22,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.13t"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.13t", "3.14-dev"]
 
     steps:
     - name: Checkout
@@ -36,12 +36,7 @@ jobs:
     - name: Install package with test dependencies
       run: pip install .[test]
 
-    - name: Test installation with nbdime
-      if: ${{ matrix.python-version != '3.9' }}
-      run: pytest -v --nbdime
-
     - name: Test installation without nbdime
-      if: ${{ matrix.python-version == '3.9' }}
       run: pytest -v
 
     - name: Test flake8