To avoid needing to bump three different files upon updates, a common publish properties file has been added.

build.gradle

@@ -1,7 +1,11 @@
 buildscript {
+    // For sharing constants between builds
+    Properties props = new Properties()
+    file("publish.properties").withInputStream { props.load(it) }
+
     // Our version: bump this on release.
     ext.corda_version = "0.7-SNAPSHOT"
-    ext.gradle_plugins_version = "0.6.2"
+    ext.gradle_plugins_version = props.getProperty("gradlePluginsVersion")
     ext.kotlin_version = '1.0.5'
     ext.quasar_version = '0.7.6'
     ext.asm_version = '0.5.3'

gradle-plugins/build.gradle

@@ -2,8 +2,12 @@
 // or if you are developing these plugins. See the readme for more information.
 
 buildscript {
-    ext.gradle_plugins_version = "0.6.2" // Our version: bump this on release.
-    ext.corda_published_version = "0.6.2" // Depend on our existing published publishing plugin.
+    // For sharing constants between builds
+    Properties props = new Properties()
+    file("../publish.properties").withInputStream { props.load(it) }
+
+    ext.gradle_plugins_version = props.getProperty("gradlePluginsVersion") // Our version: bump this on release.
+    ext.corda_published_version = "0.6.2" // Only needs to be bumped when the publishing plugin is changed.
 
     repositories {
         mavenLocal()

gradle-plugins/publish-utils/build.gradle

@@ -4,7 +4,11 @@ apply plugin: 'com.jfrog.bintray'
 
 // Used for bootstrapping project
 buildscript {
-    ext.gradle_plugins_version = "0.6.2" // Our version: bump this on release.
+    // For sharing constants between builds
+    Properties props = new Properties()
+    file("../../publish.properties").withInputStream { props.load(it) }
+
+    ext.gradle_plugins_version = props.getProperty("gradlePluginsVersion")
 
     repositories {
         jcenter()

publish.properties

@@ -0,0 +1 @@
+gradlePluginsVersion=0.6.2