diff --git a/build.gradle b/build.gradle
index 8918b6b572..4d025c6913 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@ buildscript {
     file("$projectDir/constants.properties").withInputStream { constants.load(it) }
 
     // Our version: bump this on release.
-    ext.corda_release_version = "4.0-RC03"
+    ext.corda_release_version = "4.0-RC04"
     ext.corda_platform_version = constants.getProperty("platformVersion")
     ext.gradle_plugins_version = constants.getProperty("gradlePluginsVersion")