diff --git a/README.md b/README.md
index 1ef67b7..d7f74b1 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ and Java 8 is strongly recommended because lambda expressions make typical use c
 
 ## Latest release
 
-The most recent release is version 0.2.2. [(Javadoc)](https://www.javadoc.io/doc/org.lucidfox.jpromises/jpromises/0.2.2)
+The most recent release is version 0.3.0. [(Javadoc)](https://www.javadoc.io/doc/org.lucidfox.jpromises/jpromises/0.3.0)
 
 ### Maven
 
@@ -20,7 +20,7 @@ The most recent release is version 0.2.2. [(Javadoc)](https://www.javadoc.io/doc
 <dependency>
   <groupId>org.lucidfox.jpromises</groupId>
   <artifactId>jpromises</artifactId>
-  <version>0.2.2</version>
+  <version>0.3.0</version>
 </dependency>
 ```
 
@@ -30,20 +30,20 @@ And if you need the GWT module:
 <dependency>
   <groupId>org.lucidfox.jpromises</groupId>
   <artifactId>jpromises-gwt</artifactId>
-  <version>0.2.2</version>
+  <version>0.3.0</version>
 </dependency>
 ```
 
 Gradle:
 
 ```
-'org.lucidfox.jpromises:jpromises:0.2.2'
+'org.lucidfox.jpromises:jpromises:0.3.0'
 ```
 
 And if you need the GWT module:
 
 ```
-'org.lucidfox.jpromises:jpromises-gwt:0.2.2'
+'org.lucidfox.jpromises:jpromises-gwt:0.3.0'
 ```
 
 ## Advantages
diff --git a/build.gradle b/build.gradle
index 9d2437e..61777ed 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ apply plugin: 'signing'
 sourceCompatibility = 1.7
 targetCompatibility = 1.7
 group = 'org.lucidfox.jpromises'
-version = '0.2.2'
+version = '0.3.0'
 
 task wrapper(type: Wrapper) {
 	gradleVersion = '3.5'