diff --git a/CHANGELOG.md b/CHANGELOG.md
index 146f5b5095..9619dbf251 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 **Note**: Since GDK for Unreal v0.10.0, the changelog is published in both English and Chinese. The Chinese version of each changelog is shown after its English version.<br>
 **注意**：自虚幻引擎开发套件 v0.10.0 版本起，其日志提供中英文两个版本。每个日志的中文版本都置于英文版本之后。
 
+## [`0.14.1-rc`] - unreleased
+
+### Features:
+- The GDK has been upgraded to use version 15.1.1 of SpatialOS.
 
 ## [`0.14.0`] - 2021-08-16
 
diff --git a/RequireSetup b/RequireSetup
index 82102a8751..0fe9e0e4e9 100644
--- a/RequireSetup
+++ b/RequireSetup
@@ -1,4 +1,4 @@
 Increment the below number whenever it is required to run Setup.bat or Setup.sh as part of a new commit.
 Our git hooks will detect this file has been updated and automatically run Setup.bat on pull.
 
-91
+92
diff --git a/SpatialGDK/Extras/core-sdk.version b/SpatialGDK/Extras/core-sdk.version
index de7fd55182..b6f24becd0 100644
--- a/SpatialGDK/Extras/core-sdk.version
+++ b/SpatialGDK/Extras/core-sdk.version
@@ -1,2 +1,2 @@
-15.1.0
+15.1.1
 // If changing version, update SpatialGDK/Source/SpatialGDK/Public/Utils/WorkerVersionCheck.h too
diff --git a/SpatialGDK/Source/SpatialGDK/Public/Utils/WorkerVersionCheck.h b/SpatialGDK/Source/SpatialGDK/Public/Utils/WorkerVersionCheck.h
index 7c955fba2d..64cd01a727 100644
--- a/SpatialGDK/Source/SpatialGDK/Public/Utils/WorkerVersionCheck.h
+++ b/SpatialGDK/Source/SpatialGDK/Public/Utils/WorkerVersionCheck.h
@@ -4,7 +4,7 @@
 
 #include "improbable/c_worker.h"
 
-#define WORKER_SDK_VERSION "15.1.0"
+#define WORKER_SDK_VERSION "15.1.0" // We currently download the 15.1.1 SDK, but its still marked as 15.1.0.
 
 constexpr bool StringsEqual(char const* A, char const* B)
 {