diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1be26612a..a5618a489 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,10 +20,6 @@ jobs:
         uses: pre-commit/action@v2.0.3
 
   build:
-    strategy:
-      fail-fast: false
-      matrix:
-        python-version: ["3.9", "3.10", "3.11"]
     runs-on: ubuntu-latest
     steps:
       - name: Check out repo
diff --git a/pixi.toml b/pixi.toml
index 3badfe0dc..7804d486f 100644
--- a/pixi.toml
+++ b/pixi.toml
@@ -34,7 +34,7 @@ pymetis = "*"
 pyproj = "*"
 pytest = "*"
 pytest-cov = "*"
-python = ">=3.9"
+python = "==3.9"
 ruff = "*"
 shapely = ">=2.0"
 scipy = "*"