diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 0f66d4f95a3a12..7b920ff17f8b6e 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,5 +1,9 @@
 # Release notes
 
+## [v3.1.2](https://github.com/mdn/browser-compat-data/releases/tag/v3.1.3)
+
+- `api.SVGFECompositeElement.in` replaces `api.SVGFECompositeElement.in1`, fixing an misidentified attribute (#9074)
+
 ## [v3.1.2](https://github.com/mdn/browser-compat-data/releases/tag/v3.1.2)
 
 - The following withdrawn features have been removed as irrelevant: