diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cd184054..77245293 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -191,7 +191,8 @@ jobs:
 
           # Test 32-bit Windows only with the latest Python version
           - rust: stable
-            python-version: "3.11"
+            # FIXME - pinned to 3.11.0 because 3.11.1 breaks CI on windows, see PyO3 issue 2817
+            python-version: "3.11.0"
             platform:
               {
                 os: "windows-latest",
diff --git a/.python-version b/.python-version
index 2c073331..afad8186 100644
--- a/.python-version
+++ b/.python-version
@@ -1 +1 @@
-3.11
+3.11.0