diff --git a/Runtimes/Core/CMakeLists.txt b/Runtimes/Core/CMakeLists.txt
index 32dcef799247a..69e5e12bbabf6 100644
--- a/Runtimes/Core/CMakeLists.txt
+++ b/Runtimes/Core/CMakeLists.txt
@@ -54,7 +54,7 @@ if($ENV{BUILD_NUMBER})
 endif()
 project(SwiftCore
   LANGUAGES C CXX Swift
-  VERSION 6.1.0${BUILD_NUMBER})
+  VERSION 6.2.1${BUILD_NUMBER})
 
 # The Swift standard library is not intended for use as a sub-library as part of
 # another project. It is tightly coupled with the compiler version.
diff --git a/Runtimes/Overlay/CMakeLists.txt b/Runtimes/Overlay/CMakeLists.txt
index 030a1c326587d..cf386a2b9ac13 100644
--- a/Runtimes/Overlay/CMakeLists.txt
+++ b/Runtimes/Overlay/CMakeLists.txt
@@ -20,7 +20,7 @@ if($ENV{BUILD_NUMBER})
 endif()
 project(SwiftOverlay
   LANGUAGES C CXX Swift
-  VERSION 6.1.0${BUILD_NUMBER})
+  VERSION 6.2.1${BUILD_NUMBER})
 
 find_package(SwiftCore)
 
diff --git a/Runtimes/Supplemental/StringProcessing/CMakeLists.txt b/Runtimes/Supplemental/StringProcessing/CMakeLists.txt
index f9da35e84fbed..287387c57a0a4 100644
--- a/Runtimes/Supplemental/StringProcessing/CMakeLists.txt
+++ b/Runtimes/Supplemental/StringProcessing/CMakeLists.txt
@@ -10,7 +10,7 @@ if($ENV{BUILD_NUMBER})
 endif()
 project(SwiftStringProcessing
   LANGUAGES Swift C
-  VERSION 6.1.0${BUILD_NUMBER})
+  VERSION 6.2.1${BUILD_NUMBER})
 
 if(NOT PROJECT_IS_TOP_LEVEL)
   message(FATAL_ERROR "Swift StringProcessing must build as a standalone project")