diff --git a/CHANGELOG.md b/CHANGELOG.md
index 215b1b0a..7d88468c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-2.1.0 Release notes (2024-06-25)
+2.1.0 Release notes (2024-06-26)
 =============================================================
 
 ### Fixed
@@ -16,7 +16,7 @@
 * Fileformat: Generates files with format v24. Reads and automatically upgrade from fileformat v10.
 
 ### Internals
-* Update to Core v14.10.1
+* None
 
 ----------------------------------------------
 
diff --git a/Package.swift b/Package.swift
index 0a3c1919..4c77b6da 100644
--- a/Package.swift
+++ b/Package.swift
@@ -3,7 +3,7 @@
 import PackageDescription
 
 let sdkVersion = Version("2.1.0")
-let coreVersion = Version("14.10.1")
+let coreVersion = Version("14.9.0")
 
 var cxxSettings: [CXXSetting] = [
     .define("REALM_ENABLE_SYNC", to: "1"),