diff --git a/.github/workflows/CI.yaml b/.github/workflows/CI.yaml
index aed95a5c6..da7128976 100644
--- a/.github/workflows/CI.yaml
+++ b/.github/workflows/CI.yaml
@@ -20,7 +20,6 @@ jobs:
       matrix:
         os: [macOS-latest, ubuntu-latest]
         python-version: ["3.9", "3.10", "3.11"]
-        pydantic-version: ["2"]
 
     defaults:
       run:
@@ -36,7 +35,6 @@ jobs:
           environment-file: environment-dev.yml
           create-args: >-
             python=${{ matrix.python-version }}
-            pydantic=${{ matrix.pydantic-version }}
 
       - name: Install Package
         run: python -m pip install -e .