diff --git a/.github/workflows/pytest.yaml b/.github/workflows/pytest.yaml
index cae82d03..d7783af8 100644
--- a/.github/workflows/pytest.yaml
+++ b/.github/workflows/pytest.yaml
@@ -16,7 +16,8 @@ jobs:
         python-version:
           - "3.10" # Earliest version supported by ixmp4
           - "3.11"
-          - "3.12" # Latest version supported by ixmp4
+          - "3.12" 
+          - "3.13" # Latest version supported by ixmp4
         with-pyarrow:
           - false
         postgres-version:
@@ -27,6 +28,18 @@ jobs:
           - "sqlite,rest-sqlite,postgres,rest-postgres"
         include:
           # with pyarrow
+          - python-version: "3.13"
+            with-pyarrow: true
+            postgres-version: "16"
+            pandas-version: false
+            backend: "sqlite,rest-sqlite"
+          # pgsql 15
+          - python-version: "3.13"
+            with-pyarrow: false
+            postgres-version: "15"
+            pandas-version: false
+            backend: "postgres,rest-postgres"
+          # with pyarrow
           - python-version: "3.12"
             with-pyarrow: true
             postgres-version: "16"