diff --git a/CHANGELOG.md b/CHANGELOG.md
index b4fcdfbe..ea897697 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,18 @@
 # CHANGELOG
 
+## 4.0.0 / 2021.12.23
+
+This release is a correction for v3.0.0, which was released without client-side
+aggregation enabled by default.
+
+There are no incompatible API changes in this release.
+
+* [BUGFIX] Re-enable aggregation by default See [#171][]
+* [FEATURE] Windows named pipe support See [#169][]
+
 ## 3.0.1 / 2021.12.14
 
-* [BUGFIX] Fix visibility for overrideable methods (#170)
+* [BUGFIX] Fix visibility for overrideable methods. See [#170][]
 
 ## 3.0.0 / 2021.11.02
 
@@ -188,6 +198,9 @@ Fork from [indeedeng/java-dogstatsd-client] (https://github.com/indeedeng/java-d
 [#160]: https://github.com/DataDog/java-dogstatsd-client/issues/160
 [#162]: https://github.com/DataDog/java-dogstatsd-client/issues/162
 [#164]: https://github.com/DataDog/java-dogstatsd-client/issues/164
+[#169]: https://github.com/DataDog/java-dogstatsd-client/issues/169
+[#170]: https://github.com/DataDog/java-dogstatsd-client/issues/170
+[#171]: https://github.com/DataDog/java-dogstatsd-client/issues/171
 [@PatrickAuld]: https://github.com/PatrickAuld
 [@blevz]: https://github.com/blevz
 [@cameronhotchkies]: https://github.com/cameronhotchkies
@@ -196,4 +209,4 @@ Fork from [indeedeng/java-dogstatsd-client] (https://github.com/indeedeng/java-d
 [@gherceg]: https://github.com/gherceg
 [@hanny24]: https://github.com/hanny24
 [@njhill]: https://github.com/njhill
-[@snopoke]: https://github.com/snopoke
\ No newline at end of file
+[@snopoke]: https://github.com/snopoke
diff --git a/README.md b/README.md
index f0d035f8..87423ff5 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ The client jar is distributed via Maven central, and can be downloaded [from Mav
 <dependency>
     <groupId>com.datadoghq</groupId>
     <artifactId>java-dogstatsd-client</artifactId>
-    <version>3.0.1</version>
+    <version>4.0.0</version>
 </dependency>
 ```
 
diff --git a/pom.xml b/pom.xml
index d41a57d5..c26279c8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -7,7 +7,7 @@
     <artifactId>java-dogstatsd-client</artifactId>
     <packaging>jar</packaging>
     <name>java-dogstatsd-client</name>
-    <version>3.0.1</version>
+    <version>4.0.0</version>
     <description>A tiny library allowing Java applications to communicate with DataDog statsd instances easily.</description>
     <url>https://github.com/DataDog/java-dogstatsd-client</url>