diff --git a/CHANGES.rst b/CHANGES.rst
index abed48ad7..50fb6265a 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,3 +1,11 @@
+Changes to Matrix Android SDK in 0.9.29 (2019-10-04)
+=======================================================
+
+Corrective release
+
+Bugfix:
+ - Fix / Keysbackup not working (failed to get version)
+
 Changes to Matrix Android SDK in 0.9.28 (2019-10-03)
 =======================================================
 
diff --git a/matrix-sdk-core/src/main/java/org/matrix/androidsdk/RestClient.java b/matrix-sdk-core/src/main/java/org/matrix/androidsdk/RestClient.java
index ab4e012e5..ab556da73 100644
--- a/matrix-sdk-core/src/main/java/org/matrix/androidsdk/RestClient.java
+++ b/matrix-sdk-core/src/main/java/org/matrix/androidsdk/RestClient.java
@@ -100,7 +100,7 @@ public enum EndPointServer {
     private OkHttpClient mOkHttpClient;
 
     public RestClient(HomeServerConnectionConfig hsConfig, Class<T> type, String uriPrefix) {
-        this(hsConfig, type, uriPrefix, GsonProvider.provideGson(), EndPointServer.HOME_SERVER);
+        this(hsConfig, type, uriPrefix, GsonProvider.provideKotlinGson(), EndPointServer.HOME_SERVER);
     }
 
     public RestClient(HomeServerConnectionConfig hsConfig, Class<T> type, String uriPrefix, Gson gson) {
diff --git a/matrix-sdk-core/src/main/java/org/matrix/androidsdk/core/json/GsonProvider.java b/matrix-sdk-core/src/main/java/org/matrix/androidsdk/core/json/GsonProvider.java
index a34daa077..691b628c6 100644
--- a/matrix-sdk-core/src/main/java/org/matrix/androidsdk/core/json/GsonProvider.java
+++ b/matrix-sdk-core/src/main/java/org/matrix/androidsdk/core/json/GsonProvider.java
@@ -35,4 +35,15 @@ public static Gson provideGson() {
         return gson;
     }
 
+    // Can serialize/deserialise kt objects without the need to add @JVMField
+    private static final Gson kotlinGson = new GsonBuilder()
+            .registerTypeAdapter(boolean.class, new BooleanDeserializer(false))
+            .registerTypeAdapter(Boolean.class, new BooleanDeserializer(true))
+            .create();
+
+    public static Gson provideKotlinGson() {
+        return kotlinGson;
+    }
+
+
 }
diff --git a/matrix-sdk/build.gradle b/matrix-sdk/build.gradle
index 6c5f70913..e0071e7aa 100644
--- a/matrix-sdk/build.gradle
+++ b/matrix-sdk/build.gradle
@@ -27,8 +27,8 @@ android {
     defaultConfig {
         minSdkVersion 16
         targetSdkVersion 28
-        versionCode 928
-        versionName "0.9.28"
+        versionCode 929
+        versionName "0.9.29"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 
         // Enable multi dex for test
diff --git a/matrix-sdk/src/main/java/org/matrix/androidsdk/core/JsonUtils.java b/matrix-sdk/src/main/java/org/matrix/androidsdk/core/JsonUtils.java
index 779f4a18a..c9fc1298a 100644
--- a/matrix-sdk/src/main/java/org/matrix/androidsdk/core/JsonUtils.java
+++ b/matrix-sdk/src/main/java/org/matrix/androidsdk/core/JsonUtils.java
@@ -70,11 +70,6 @@ public class JsonUtils {
 
     private static final Gson basicGson = new Gson();
 
-    private static final Gson kotlinGson = new GsonBuilder()
-            .registerTypeAdapter(boolean.class, new BooleanDeserializer(false))
-            .registerTypeAdapter(Boolean.class, new BooleanDeserializer(true))
-            .create();
-
     private static final Gson gson = new GsonBuilder()
             .setFieldNamingStrategy(new MatrixFieldNamingStrategy())
             .excludeFieldsWithModifiers(Modifier.PRIVATE, Modifier.STATIC)
@@ -104,15 +99,6 @@ public static Gson getBasicGson() {
         return basicGson;
     }
 
-    /**
-     * Provides the JSON parser for Kotlin.
-     *
-     * @return the kotlin JSON parser
-     */
-    public static Gson getKotlinGson() {
-        return kotlinGson;
-    }
-
     /**
      * Provides the JSON parser.
      *