diff --git a/CHANGELOG.md b/CHANGELOG.md
index 09d536489..0abb15b61 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Change Log
 
+## [1.2.20](https://github.com/ably/ably-java/tree/v1.2.20)
+
+[Full Changelog](https://github.com/ably/ably-java/compare/v1.2.19...v1.2.20)
+
+Sorry for the release noise, but the big fix we thought we had made in [1.2.19](https://github.com/ably/ably-java/releases/tag/v1.2.19) turned out not to fix the problem...
+
+**Second Attempt at Bug Fix:**
+Automatic presence re-enter after network connection is back does not work [\#857](https://github.com/ably/ably-java/issues/857) in Revert to protocol 1.0 [\#864](https://github.com/ably/ably-java/pull/864) ([QuintinWillison](https://github.com/QuintinWillison))
+
 ## [1.2.19](https://github.com/ably/ably-java/tree/v1.2.19)
 
 [Full Changelog](https://github.com/ably/ably-java/compare/v1.2.18...v1.2.19)
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 7462a5990..ef25fab50 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -191,7 +191,7 @@ You may wish to make changes to Ably Java or Ably Android, and test it immediate
 - Open the directory printed from the output of that command. Inside that folder, get the `ably-android-x.y.z.aar`, and place it your Android project's `libs/` directory. Create this directory if it doesn't exist.
 - Add an `implementation` dependency on the `.aar`:
 ```groovy
-implementation files('libs/ably-android-1.2.19.aar')
+implementation files('libs/ably-android-1.2.20.aar')
 ```
 - Add the `implementation` (not `testImplementation`) dependencies found in `dependencies.gradle` to your project. This is because the `.aar` does not contain dependencies.
 - Build/run your application.
diff --git a/README.md b/README.md
index 4d2ce4c9f..6b2817e07 100644
--- a/README.md
+++ b/README.md
@@ -18,13 +18,13 @@ Include the library by adding an `implementation` reference to `dependencies` bl
 For [Java](https://mvnrepository.com/artifact/io.ably/ably-java/latest):
 
 ```groovy
-implementation 'io.ably:ably-java:1.2.19'
+implementation 'io.ably:ably-java:1.2.20'
 ```
 
 For [Android](https://mvnrepository.com/artifact/io.ably/ably-android/latest):
 
 ```groovy
-implementation 'io.ably:ably-android:1.2.19'
+implementation 'io.ably:ably-android:1.2.20'
 ```
 
 The library is hosted on [Maven Central](https://mvnrepository.com/repos/central), so you need to ensure that the repository is referenced also; IDEs will typically include this by default:
diff --git a/common.gradle b/common.gradle
index 6d1ffa706..19e33c6e6 100644
--- a/common.gradle
+++ b/common.gradle
@@ -3,7 +3,7 @@ repositories {
 }
 
 group = 'io.ably'
-version = '1.2.19'
+version = '1.2.20'
 description = 'Ably java client library'
 
 tasks.withType(Javadoc) {
diff --git a/lib/src/test/java/io/ably/lib/test/realtime/RealtimeHttpHeaderTest.java b/lib/src/test/java/io/ably/lib/test/realtime/RealtimeHttpHeaderTest.java
index 704ec0ec8..24d35394e 100644
--- a/lib/src/test/java/io/ably/lib/test/realtime/RealtimeHttpHeaderTest.java
+++ b/lib/src/test/java/io/ably/lib/test/realtime/RealtimeHttpHeaderTest.java
@@ -88,7 +88,7 @@ public void realtime_websocket_param_test() {
              * Defaults.ABLY_AGENT_PARAM, as ultimately the request param has been derived from those values.
              */
             assertEquals("Verify correct lib version", requestParameters.get("agent"),
-                    Collections.singletonList("ably-java/1.2.19 jre/" + System.getProperty("java.version")));
+                    Collections.singletonList("ably-java/1.2.20 jre/" + System.getProperty("java.version")));
 
             /* Spec RTN2a */
             assertEquals("Verify correct format", requestParameters.get("format"),