diff --git a/CHANGELOG.md b/CHANGELOG.md
index d7364369..3454be5e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+## `0.4.0` - 2020-09-14
+
 ### Added
 
 - Added `com.unity.quicksearch` package for easy search. [#292](https://github.com/spatialos/gdk-for-unity-fps-starter-project/pull/292)
@@ -9,6 +11,7 @@
   
 ### Changed
 
+- Upgraded to GDK for Unity version `0.4.0`
 - Migrated launch configurations to latest game templates. [#290](https://github.com/spatialos/gdk-for-unity-fps-starter-project/pull/290)
 - Enabled Burst by default. [#294](https://github.com/spatialos/gdk-for-unity-fps-starter-project/pull/294)
 
diff --git a/gdk.pinned b/gdk.pinned
index 012a507a..5060d6fd 100644
--- a/gdk.pinned
+++ b/gdk.pinned
@@ -1 +1 @@
-develop 03f85efd31a120e2157375f17a4b52c84c5a043c
+develop 66cbca07e31b76710ed4e41459371c40ea2103de
\ No newline at end of file
diff --git a/workers/unity/Packages/manifest.json b/workers/unity/Packages/manifest.json
index db16d8c4..1e2464f8 100644
--- a/workers/unity/Packages/manifest.json
+++ b/workers/unity/Packages/manifest.json
@@ -5,17 +5,17 @@
     "com.unity.postprocessing": "2.3.0",
     "com.unity.quicksearch": "2.0.0",
     "com.unity.ugui": "1.0.0",
-    "io.improbable.gdk.buildsystem": "0.3.10",
-    "io.improbable.gdk.core": "0.3.10",
-    "io.improbable.gdk.debug": "0.3.10",
-    "io.improbable.gdk.deploymentlauncher": "0.3.10",
-    "io.improbable.gdk.gameobjectcreation": "0.3.10",
-    "io.improbable.gdk.mobile": "0.3.10",
-    "io.improbable.gdk.playerlifecycle": "0.3.10",
-    "io.improbable.gdk.querybasedinteresthelper": "0.3.10",
-    "io.improbable.gdk.testutils": "0.3.10",
-    "io.improbable.gdk.tools": "0.3.10",
-    "io.improbable.gdk.transformsynchronization": "0.3.10",
+    "io.improbable.gdk.buildsystem": "0.4.0",
+    "io.improbable.gdk.core": "0.4.0",
+    "io.improbable.gdk.debug": "0.4.0",
+    "io.improbable.gdk.deploymentlauncher": "0.4.0",
+    "io.improbable.gdk.gameobjectcreation": "0.4.0",
+    "io.improbable.gdk.mobile": "0.4.0",
+    "io.improbable.gdk.playerlifecycle": "0.4.0",
+    "io.improbable.gdk.querybasedinteresthelper": "0.4.0",
+    "io.improbable.gdk.testutils": "0.4.0",
+    "io.improbable.gdk.tools": "0.4.0",
+    "io.improbable.gdk.transformsynchronization": "0.4.0",
     "com.unity.modules.ai": "1.0.0",
     "com.unity.modules.animation": "1.0.0",
     "com.unity.modules.assetbundle": "1.0.0",
@@ -43,4 +43,4 @@
       ]
     }
   ]
-}
+}
\ No newline at end of file