diff --git a/fern/products/sdks/overview/python/changelog/2025-09-25.mdx b/fern/products/sdks/overview/python/changelog/2025-09-25.mdx
index 0dc7bdbd9..67b103257 100644
--- a/fern/products/sdks/overview/python/changelog/2025-09-25.mdx
+++ b/fern/products/sdks/overview/python/changelog/2025-09-25.mdx
@@ -1,3 +1,6 @@
+## 4.30.1
+**`(fix):`** Fix sdk `v1_on_v2` export of non-existent `IS_PYDANTIC_V2` variable.
+
 ## 4.30.0
 **`(feat):`** Add support for PR mode for self-hosted/local sdk generation