diff --git a/schemes/main/manifest.json b/schemes/main/manifest.json
index d3357689..c2354ee0 100644
--- a/schemes/main/manifest.json
+++ b/schemes/main/manifest.json
@@ -1,5 +1,5 @@
 {
-  "base-tag": "swift-DEVELOPMENT-SNAPSHOT-2024-12-16-a",
+  "base-tag": "swift-DEVELOPMENT-SNAPSHOT-2024-12-19-a",
   "build-compiler": false,
   "icu4c": [],
   "libxml2": [