diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index 05d8662..07e6f89 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -26,7 +26,7 @@ jobs:
   run-tests:
     strategy:
       matrix:
-        python-version: [ 3.11 ]
+        python-version: [ 3.9, 3.11 ]
         os: [ ubuntu-latest ]
       fail-fast: false
     runs-on: ${{ matrix.os }}
diff --git a/pyproject.toml b/pyproject.toml
index 8e1c354..a0fa8c6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "jaxtyping"
-version = "0.2.35"
+version = "0.2.36"
 description = "Type annotations and runtime checking for shape and dtype of JAX/NumPy/PyTorch/etc. arrays."
 readme = "README.md"
 requires-python =">=3.9"