diff --git a/changelog/3016.bugfix b/changelog/3016.bugfix
new file mode 100644
index 000000000..1e2c86bdf
--- /dev/null
+++ b/changelog/3016.bugfix
@@ -0,0 +1,2 @@
+Fixed restoring Python state after in-process pytest runs with the ``pytester`` plugin; this may break tests using
+making multiple inprocess pytest runs if later ones depend on earlier ones leaking global interpreter changes.