diff --git a/.github/workflows/python-client.yml b/.github/workflows/python-client.yml
index 54a8e715e8..8ee2d50110 100644
--- a/.github/workflows/python-client.yml
+++ b/.github/workflows/python-client.yml
@@ -38,7 +38,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
 
     steps:
       - name: Checkout Polaris project
@@ -74,6 +74,6 @@ jobs:
         run: |
           make client-integration-test
 
-      - name: Run Polaris Client help maual
+      - name: Run Polaris Client help manual
         run: |
           ./polaris --help
diff --git a/client/python/pyproject.toml b/client/python/pyproject.toml
index bec608d584..7d4af8f1f4 100644
--- a/client/python/pyproject.toml
+++ b/client/python/pyproject.toml
@@ -62,6 +62,9 @@ mypy = ">=1.18, <=1.18.1"
 pyiceberg = "==0.10.0"
 pre-commit = "==4.3.0"
 openapi-generator-cli = "==7.11.0.post0"
+# pin virtualenv version to prevent poetry from upgrading to an incompatible version
+# see https://github.com/python-poetry/poetry/issues/10504#issuecomment-3176923981
+virtualenv = ">=20.26.6,<20.33.0"
 
 [build-system]
 requires = ["poetry-core>=2.0.0,<3.0.0", "openapi-generator-cli==7.11.0.post0"]